Commissioner Giulia Corsi is assigned to the tenth Tuscolano of Rome. Ardenzi has won the competition to become commissioner. A bank robber escapes due to an unforeseen event on a bus, on which Commissioner Corsi happens to be traveling.

A theft is reported and an officer's partner is suspected. Meanwhile, a man's body is discovered in a closed construction site. A recovered video reveals that Angela, Ardenzi's wife, was pushed and did not slip from the ledge.

An Eastern girl who works in a dry cleaner's is raped by her boss. Ardenzi discovers a clue by reviewing the film showing his wife's fall, but unwittingly ruins it. He decides to stay in Rome to investigate.

A teenager commits suicide. It is believed that the act was committed because of the sexual violence suffered by the boy at the hands of the owner of an arcade. Ardenzi searches for evidence on the terrace where the tragedy involving his wife occurred.

Ugo thinks he inherited from a relative. Corsi shoots in vain at a robber, seriously wounding a child playing in the street. Ardenzi tries to trace the owner of the ring worn by the man who pushed Angela.

The disciplinary opens an investigation into Corsi's actions, for the wounding of a child during a robbery. A heart patient is kidnapped and a kidnapper tries to get her a drug. Ardenzi traces the goldsmith who created the murderer's ring.

A hit-and-run car hits a child friend of Inspector Belli. A "Latin lover" reports that his romantic encounters are on the Internet. The apartment of the goldsmith Leone is uninhabited. It turns out that he is in treatment with Alcoholics Anonymous.

A criminal, Masci, demands "pizzo" from Mr. Nobile, the owner of a car dealership. When Nobile goes to the police, the criminal kidnaps his daughter. Vittoria is scammed by a slimming center.

Two thieves use hypnosis to steal from people. Ingargiola discovers that she may have a son she didn't know existed. Ardenzi is offered an apartment to rent. The hospital where Leone is hospitalized for alcoholism is discovered.

A lawyer's wife is found dead, and the suspect is the murdered woman's lover. A series of burglaries are reported in a building. Corsi finds the goldsmith who created the ring, but someone has beaten her to it, leaving a trail of perfume.

A supermarket is attacked with explosives. Two former employees are traced. Sabina Corsi and her boyfriend accidentally set fire to a classroom while smoking and are suspended from school. Ingargiola solves the mystery of his alleged paternity.

An antique dealer is paralyzed during an attack. Corsi sets a trap for the killer. Tiberio has a heart attack while chasing a mugger. Corsi realizes that Carla Monti is implicated in Angela's murder but it will be difficult to frame her.

A man reports his elderly mother missing, blaming the Filipino couple who lived with her, who instead claim that the lady is on a trip to Venice. Meanwhile, Carla Monti is finalizing a terrible plan.

A sick child urgently needs a blood transfusion, but the mother is against it because she is a Jehovah's Witness. The father does not agree with the woman, but she kidnaps the child. Carla Monti succeeds in carrying out her attack.

The commissioner's office is destroyed by a parcel bomb. Ardenzi, temporarily in command because Corsi is at the bedside of Paolo, who was seriously injured in the explosion, manages to identify the blonde woman who sent the parcel.

A group of boys steal valuables and destroy the home of a classmate, who is also a member of the gang. The group forces him to participate in the robbery of the family jewelry store. But he confides in a classmate.

Corsi has Carla Monti, suspected of having delivered the parcel bomb, followed. A homeless man claims to have been attacked by some Nazi skinheads. Ardenzi meets Francesca and is impressed. He deals with a fire that occurred in a bakery.

Something unexpected happened between Luca and Valeria. Two rappers report being scammed in a club. A man who has lost his memory is taken to the police station. Meanwhile, Corsi tries to understand what a particular painting evokes in her.

Carla Monti is wanted, but they want to take the case away from Corsi because her men are too involved. A woman has problems with loan sharks. Ardenzi dreams of meeting Angela; the vision will allow him to discover important truths.

Sabina Corsi, returning from a party at dawn, wanders around the city, with a lost look. Mauretta has the mumps and Ardenzi asks Francesca for help. In a villa, some people are held hostage by thieves determined to break into the vault.

Sabina's boyfriend confesses to Giulia Corsi that he bought the pills in a nightclub. The commissioner, to find out who put his sister's life at risk, has some officers pretend to be drug dealers.

They try to capture a drug trafficker who passes himself off as a merchant and lives on a yacht. Vittoria is depressed because the judge has taken away her custody of her son. Luca and Valeria guard the clinic where Professor Monti resides.

During the filming of a fiction, the protagonist suffers real threats. Belli is sad about the end of his relationship with Germana. Ingargiola is anxious about his debut. Ugo solves the case of a tailor whose clothes were stolen.

A young Romanian woman reports her husband missing. He worked illegally in construction and is found dead. It turns out that the fugitive Monti brothers may be in a villa that belonged to their family.

In the neighborhood, many elderly people are drugged and robbed in their homes. Ardenzi helps a teacher at his daughter's kindergarten. Vittoria receives the greatest gift of her life. Daniele and Sabina intend to skip school, but someone has listened to them.

The fateful day arrives for Belli and Germana and Ardenzi goes to the jewelry store to pick up the wedding rings. But the jeweler has made a mistake. Sabina is kidnapped. Belli and Libero manage to locate the area where the girl is.

Mauro, is engaged in a difficult anti-drug operation. In the meantime, the wedding between Commissioner Giulia Corsi and Inspector Paolo Libero is about to be celebrated. Ardenzi is taken hostage by a bandit during the anti-drug operation.

Commissioner Corsi and Paolo Libero investigate a heroin trafficking inside a warehouse of slaughtered animals. In the meantime, Francesca gets back in touch with Ardenzi. Ingargiola buys a beautiful motorbike that, however, hides many dangers.

While Giulia is still trying to shed light on what happened ten years earlier - the day of the assassination of her father, Judge Corsi - a particularly delicate situation arises at the 10th Tuscolano police station: a man, who had just been evicted, reacted to the police by shooting from the apartment in which he had barricaded himself, then opened the gas cylinder and took a little girl hostage.

Ardenzi and Belli are trying to track down a robber, while Ingargiola, Vittoria Guerra and Parmesan receive a series of strange reports from men who claim to have been robbed under a specific overpass, all in different circumstances. Meanwhile, Giulia receives important revelations about her father's murder.

This time Mauro and Roberto are engaged in a desperate chase: a woman has kidnapped her eight-year-old daughter from school and, in a state of delirium, has involved her in a crazy car race to reach her husband's lover, whom she holds responsible for the failure of her marriage. Meanwhile, Parmesan discovers that his credit card has been cloned and that a lot of money has disappeared from his account. His colleagues from the X° Tuscolano immediately try to help him discover the person responsible for the scam. Giulia and Paolo, in the meantime, receive a mysterious envelope addressed to Commissioner Corsi.

After a tough confrontation with her sister Sabina, who until now was unaware of the reopening of the case concerning her father, Giulia decides to continue the investigation anyway, with the strong support of Paolo. Meanwhile, a pregnant woman who has just suffered a sexual assault arrives at the Decimo Tuscolano. All suspicions seem to fall on her ex-boyfriend, who, however, has an ironclad alibi.

Giulia asks her collaborators to solve the case concerning her father: Paolo and Luca identify a suspect. While Mauro and Roberto deal with their mutual problems regarding their private lives, a homeless man is found murdered in a park and the two agents immediately begin their search for the culprit.

Unexpected news reaches the Decimo Tuscolano. In fact, while Roberto, happy about some sentimental news, receives the official transfer letter, Mauro discovers that a friend of his, an aspiring boxer, is in a coma in the hospital after being violently beaten. The agents understand that the victim is involved in a clandestine betting ring and Paolo, who has years of kickboxing training behind him, offers to go, as an infiltrator, to the gym frequented by the beaten boy.

While Giulia is in the hospital, the activities of the Decimo Tuscolano do not stop. Ingargiola, Vittoria and Parmesan investigate the case of a girl who ended up in a coma due to a drug used to lose weight; Luca and Roberto deal with a boy who passes himself off as a policeman by giving punishments to small-time criminals; Paolo and Mauro, instead, try to understand the causes of Giulia's accident.

Giulia returns to the police station more combative than ever, determined to frame Greco, with the help of Mauro and Paolo. In the meantime, however, she must solve a new case: a young man is found dead in his pizzeria. The sister of the murdered man accuses her father, but the real culprit will soon come out into the open.

At the X Tuscolano comes the shocking news of a minor who is in a coma after accidentally ingesting cocaine. Mauro immediately goes to the hospital and discovers, with great astonishment, that the accused is Ardenzi and the victim is his daughter, little Mauretta. Meanwhile Ingargiola receives the complaint of a woman whose wallet has been stolen, and realizing that it is his first love as a child, he loses himself in nostalgic memories.

The District agents work on the case of the discovery of a body on the banks of the Tiber and discover that the victim, a photographer responsible for an environmental association, was investigating the deliberate pollution of the river. In the meantime, five people who escaped the fire of a local supermarket arrive at the police station and are looking for the hero who saved them by opening an escape route for them. And who knows, maybe it's someone who works at the Decimo Tuscolano. Giulia, in the meantime, continues her research on her father's case and manages to check the contents of some CD-ROMs found in Greco's house.

Mauro and Roberto investigate the death of a young man who was hit by a car going at high speed and discover that he was involved in a clandestine car race. Meanwhile, Mauro's father, Tiberio, has been the victim of a financial scam, losing twenty thousand euros, half of which belonged to his son. Giulia calls an expert, Prof. De Santis, in search of the truth about the new discoveries related to her father's case. That evening, at the town hall, Paolo is waiting for her to finally celebrate their wedding. Will they be able to get married this time?

A man in a deep depression kills his wife and her new partner. The daughter, who learns of the tragedy on the news, turns to the Decimo Tuscolano, who immediately offers her protection. Soon, however, the girl's father will try to track her down. Ugo and Ingargiola, meanwhile, investigate the disappearance of two elderly ladies. Paolo notices that Sabina, Giulia's sister, is in crisis over what has been discovered about her father and decides to get to the bottom of the research. He discovers some details that will prove very risky for him.

At X Tuscolano, the arrival of a new agent, Corrado, presumed son of Ingargiola, is celebrated. Luca immediately involves him in reporting a robbery at a gas station by two motorcyclists, unrecognizable because of their helmets. The young man's debut in the police force will not be very simple. Giulia, meanwhile, very worried about the disappearance of Paolo who did not return home during the night, alerts Roberto and Mauro to explore every single lead in the area. The clues that the agents find to trace Paolo are not, however, very comforting.

While the desperate search for Paolo continues, a new case involves Luca and Corrado: the discovery of the body of a young Albanian woman, which will lead them to investigate a prostitution ring. Vittoria and Ingargiola, on the other hand, are busy solving a blackmail issue.

Giulia informs her sister of what happened to Paolo and, without giving herself peace, tries to find an explanation. Her colleagues advise her to take at least a day off. Meanwhile, Vittoria finds herself dealing with the case of Simone, a deaf-mute child who would like to attend a normal school. In addition, a sixteen-year-old is found dead in the courtyard of his school and Luca and Corrado begin to investigate.

Thieves enter Mauro and Germana's house and steal the video camera with which Inspector Belli had filmed Giulia and Paolo's wedding day. Mauro cannot stand the idea of ​​having lost that precious tape and launches into investigations. Luca and Corrado, on the other hand, try to solve a difficult case whose victim is a young woman, a chat lover, who is found suffocated in her home. Meanwhile, Vittoria and Ingargiola seem to be jealous of each other and Ardenzi receives a letter from Francesca.

After the robbery at Mauro and Germana's house, the couple moves to Roberto's house, significantly reducing his privacy with Francesca. But there's no time for personal complaints: the agents have to deal with a girl injured by an anonymous man who shot her from afar. It could be a sniper. Meanwhile, Ugo and Vittoria solve the case of a teacher who is the victim of obscene anonymous phone calls. Meanwhile, something happens between Ingargiola and Vittoria that they would never have expected.

Mauro and Roberto run to stop a man who is blatantly about to shoot himself in the street. Giulia, in the meantime, continues to investigate Paolo's death, based on some photos examined by the forensic team.

While Mauro and Roberto investigate a twenty-year-old Algerian whose hand was amputated. Parmesan must deal with the complicated case of a mother and her daughter who were scammed by a supposed Filipino healer. Meanwhile, Luca and Corrado help Giulia in the investigation into Paolo's murder, following a man, Ira, who seems to have falsified his name.

Mauro and Roberto don the unusual robes of friars in a cloistered convent to conduct investigations. In fact, a precious altarpiece, recently restored, has just returned to the convent, and the prior, suspicious of some tampering with documents, fears that someone wants to steal it. Giulia, meanwhile, collects the confession of a woman who was mistreated by her ex-husband, a particularly dangerous person, who is now about to be released from prison. The investigations into the mysterious Ira continue, bringing to light new disturbing truths.

While Mauro and Germana are in the hospital to collect the results of the tests performed to find out if they will be able to have children, a man takes a nurse hostage and locks himself in the room where his son, who is dying, is waiting for a heart transplant. Mauro will be able to intervene promptly and resolve the delicate situation. Meanwhile, the agents of the X° Tuscolano try to foil the attempted kidnapping of a child, based on some photos found in the basement where Ira worked.

A series of latent tensions explode within the 10th Tuscolano. Vittoria is offended because Ingargiola is afraid to admit his feelings for her in front of his colleagues; Ugo wants to marry Adele but, at the same time, does not want to have to move to Argentina; while Luca is hurt by Corrado's attitude, who avoids him after discovering his homosexuality. Giulia, on the other hand, is disconcerted by Ira's ostentatious indifference towards Paolo's death, and does not know how to deal with him during the interrogation.

Roberto discovers that Francesca and Mauretta have been kidnapped, after which a phone call to his cell phone orders him not to ask anyone for help. Roberto soon discovers that there are clear and dangerous connections between the kidnapping and Paolo's murder, reaching the conclusion that the X° Tuscolano is being monitored through spy microphones. Meanwhile, Luca and Corrado deal with the case of a woman who disappeared after a car accident.

Giulia and Mauro call the forensic team to remove the microphones hidden inside the police station. Someone who has free access to the rooms of the X° Tuscolano has managed to place them undisturbed, perhaps one of the most unsuspected people. The solution to all the mysteries is about to be revealed once and for all.

On her thirtieth birthday, Commissioner Giulia Corsi finds herself facing yet another difficult case: three criminals with criminal records for armed robbery are preparing a big heist. The traffic police will discover them during a routine check, in which two police officers will be killed. The intervention of the charming Commissioner Turchi, who has been on the trail of the three criminals for some time, is crucial to the investigation. Giulia manages to track down the target of the robbery, an armored van from the Finance Police that follows a secret route, known only to a few officials of the Ministry. With her agents Mauro and Roberto, Giulia captures the trio. A fourth man, wounded, manages to escape but is killed shortly after by Turchi.

Just recovered from the serious wound inflicted by Turchi, Giulia returns to the X Tuscolano. Mauro and Roberto are investigating an unidentified young woman who was hit the night before and kept in a pharmacological coma. They find her car and from there they discover that Flavia is the wife of a well-known jewelry designer, Guido Palmeri. Once in his atelier they find themselves in front of the artist's body, killed by a stab to the heart. At first Giulia suspects her wife, who however regains consciousness and tells her version: the night before she was upset, she had discovered that Guido was cheating on her. The one who revealed it to her was her husband's partner, Antonio Vaccari, who was also betrayed because the artist stole the precious stones to use for his creations.

The boy who saved Sabina by taking her to the hospital for an emergency birth shows up at the Corsi sisters' house to say hello: Giulia thanks him, Sabina invites him to Paolo's baptism. Mauro and Roberto chase two robbers who have just robbed a jewelry store: the fugitives run over an elderly man, forcing the officers to stop. From an image taken by the jewelry store's video camera, the new arrival Anna discovers a scarification on the criminal's wrist. Mauro and Roberto notice an identical mark on the photo in a local tattoo shop: the man photographed is a criminal, Mottola, who is immediately captured.

Seventeen-year-old Elisa, found on the street in a state of shock, is taken to the X Tuscolano: the girl says she was beaten and raped at the home of a boy she met the night before at a disco. Matteo Socci, the classic daddy's boy, reacts with mockery to Elisa's accusations, denying everything. While Mauro and Roberto investigate, discovering that the doorman of the building where Matteo lives is a voyeur who filmed the rape, tampering with the video surveillance tapes that would prove Elisa's escape, Vittoria and Ingargiola deal with the strange case of a kidnapped body, complete with ransom paid by the rich Italian-American widow. After having framed the undertaker who masterminded the macabre scam, everyone is ready to attend Paolo's baptism.

Mauro wakes up on the beach in front of the villa where Germana had arranged to meet him the night before. He is drunk, he doesn't have his service pistol and he has been hit in the head. At home he discovers Germana in bed with the man from the hotel, both in a pool of blood. Captain Rea's carabinieri arrive: shortly after, Commissioner Corsi and Roberto, Giulia recognizes him as the man who saved Sabina. Mauro follows Germana to the hospital: the woman is seriously injured, the man is dead. Prosecutor Altieri entrusts the case to Rea, Giulia allows Roberto to investigate in parallel: she doesn't know that the officer has found Mauro's pistol and has handed it over to Boni of the forensic team to determine if it is the murder weapon.

While Anna and Luca investigate the case of a girl killed in the night by a hit-and-run driver, Roberto receives confirmation from Boni that Mauro's gun was recently fired. The policeman is tormented by doubt: what if his best friend was really guilty? Meanwhile, social worker Marina Stopponi decides that little Pietro must return to the institution. Mauro tries to oppose but the child is angry with him because he lied to him about Germana. Boni tells Roberto that the bullets found on Liverani's body are compatible with those of Mauro's gun: the officer hands the weapon to Giulia who immediately gives it to Captain Rea, for whom there are no longer any doubts about the guilt of officer Belli.

Mauro is detained at Forte Boccea, the press splashes the monster on the front page. Roberto continues to investigate and learns from the caretaker of the villa that Liverani did not have a license: if he was not the one who drove Germana's car, the hypothesis of the presence of a third man and of the staging to frame Mauro becomes certain. In the meantime Giulia, Luca and Anna deal with the kidnapping of twenty-year-old Gabriele Mattei. Following the payment of the ransom by the parents and the release of the boy, Commissioner Corsi will discover that the organizer was an employee of Mr. Mattei in cahoots with his son, eager to get his hands on the parents' money.

After being released from prison, Mauro rushes to Germana's bedside, still in a coma. He then returns to the X Tuscolano, celebrated by his colleagues, and with Roberto he follows the case of a woman who was found lifeless by her son, inside her apartment. Giorgia Morelli was the victim of a loan shark in the area, Taddei, who according to her son could be the murderer. Giulia will discover that the woman, desperate about her situation, actually committed suicide: it was her son who hid the evidence to frame Taddei, thinking in this way to appease his own feelings of guilt for having left his mother alone in that situation. Altieri invites Giulia to participate in the press conference to praise the collaboration between the police and the Carabinieri in the Belli case.

Captain Rea and the district team continue their investigations to discover the perpetrators of the Liverani crime. Thanks to the identikit provided by Germana, they manage to trace the identity of the murderer: it is a man who worked for the secret services in Somalia. When Luca and Anna track him down, they just have time to save him from a deadly ambush. In the meantime, Giulia investigates the case of a young man found dying after ingesting a deadly cocktail of narcotics. A friend of the victim reports the dealer who is supposed to have sold the drugs.

Mauro and Roberto investigate the death of a beautiful woman of Slavic origins, with a past as a prostitute, who, moreover, was pregnant. It will be discovered that the victim was hiding a double life from her husband. Why was she lying to her husband? Behind the bitter story, the agents will come to reveal a tragic truth.

After the failed attack on Terenzi by the two mysterious motorcyclists, all that remains are the bullets from the shooting. Parmesan and Rea work together to discover that Terenzi's gun had already been fired two years earlier to kill a city councilor. Meanwhile, Mauro and Roberto are dealing with the case of a twenty-year-old drug addict found dead in the Colle Oppio park. Her policeman brother, Stefano, is convinced that the killer is the drug dealer Sanna and demands to participate in the investigation. It will be the father, unable to sustain the charade organized by Stefano to frame Sanna, who confesses what really happened that evening: he and his daughter had argued because Patrizia needed money and during the fight the girl had hit her head, dying instantly.

While Roberto and Mauro are dealing with a thief called Fantomas for his extraordinary disguises, in the guise of a priest the man has stolen a gift from Roberto's house intended for Francesca, returning that evening, Anna and Luca follow the case of a young swimming champion attacked after a training session, in the darkness of the locker room. Viola has a bad fracture in her arm and will not be able to participate in the European championships. Roberto will get the stolen goods back but not Francesca who, after the trip, has decided to leave him. Giulia will instead discover that Viola has self-harmed so as not to embody her violent father's dreams of glory.

Thanks to the joint investigation of the Police and the Carabinieri, Giulia and Davide discovered twelve tons of drums containing toxic and carcinogenic waste hidden in the land purchased with the mediation of the broker Liverani and cost the life of a city councilor killed with Terenzi's weapon. Germana writes an article on the ecomafia that is published on the front page and sparks a great debate. From that moment on, Terenzi follows her insistently. While Ugo is struggling to organize his next wedding with Adele and Vittoria and Ingargiola continue to argue, Mauro and Roberto investigate the murder of Aicha, a twenty-year-old Moroccan.

Mauro and Roberto investigate the beating of sixteen-year-old Bruno Cordari, which took place in front of his high school: the boy is in intensive care. The two officers of the X Tuscolano will discover a fierce baby gang that terrorizes the institute by stealing the scooters of the students who are then beaten to force them not to file a complaint. The vehicles are then received by the young janitor and Bruno, the aspiring leader of the gang, who in competition with Andrea Moretti, a classmate of his who becomes the main suspect. But the story is even more complex. Meanwhile, Germana has been summoned by Terenzi for an interview: the former para' feels in danger and wants to tell her everything he knows.

Mauro tells Giulia that he suspects there is a mole among the Carabinieri, but the commissioner thinks he is too involved and passes the investigation to Luca and Anna. Agent Gori collaborates with Captain Rea in the search for the CD-ROM that Liverani wanted to give to Germana, but nothing happens at the villa. Roberto and Mauro instead deal with the case of a newborn baby kidnapped from a clinic: they will discover that it was the very young natural mother, the Albanian Irma, who took him back. In fact, the baby was sold to a wealthy childless couple: but the child is ill and Roberto will convince Irma to have him treated. This story will make him understand how much he cares for Francesca and how much he wants to have a child with her.

Daniele, Sabina's brilliant computer scientist partner, is involved by Mauro in the investigation into the ecomafia: his help is needed to decrypt Liverani's CD-ROM. Giulia decides to cover for her men, unleashing the ire of prosecutor Altieri who had assigned the investigation to the Carabinieri. Davide is also hurt by Giulia's choice but she explains her doubts to him. In the meantime, Anna and Luca confront each other on a delicate family case: eleven-year-old Stella accuses her stepfather of having molested her; in reaction, the girl's father brutally attacks his wife's new partner, who in the end turns out to be innocent. Anna confides in Luca that at the same age as Stella she was raped by her stepfather. Meanwhile, Terenzi's two murderers show up at the X Tuscolano disguised as Carabinieri demanding the CD-ROM.

Roberto and Luca investigate Maroni, a prisoner who escaped from his prison guards to prepare a robbery at a post office and leave with his partner Nadia for the Philippines. The woman, suffering from a serious breast tumor, hopes to be saved by a local healer and for this reason Maroni, stopped by the officers, locks himself in the place threatening to kill the hostages if they don't give him a car to the airport within an hour. Rea tries to understand what happened at the X Tuscolano with the two fake carabinieri who stole Liverani's CD-ROM. Altieri is furious about what happened and takes the case away from Giulia: Rea, however, promises her that they will continue to work together. Parmesan is in shock after an accident.

Cristina Bini, a young babysitter, is stabbed to death by her ex Carlo Serra, a drug addict who stole her three-year-old daughter, Laura, who was with her. The little girl is the daughter of Lieutenant Nicola Riva, a colleague of Captain Davide Rea who is taking part in the search. Serra is found in the farmhouse where Paolo Libero was killed for the investigation into pedophilia and confesses to having given Laura to a stranger. Giulia confronts Pietro De Santis, the former criminologist in prison for child trafficking: the monster, in exchange for lifelong isolation, names Alfredo Castiglia, in whose house Laura is found, safe and sound. Giulia faces her past and Paolo's death, Rea is close to her.

Two young, unwary men, Chicco and Spillo, rob the junk shop of a certain Politi, who is actually a dangerous fence who in fact reacts by shooting at the fleeing motorbike and hitting Spillo. Roberto, Luca and Anna collect Politi's complaint, later discovering that the man reacted in this way because the two had stolen some precious jewels from him, hidden among the junk. The case will be solved with the collaboration of the informant Camomilla, who reveals herself to be Chicco's uncle, and thanks to Roberto's timing who manages to save the two from Politi's retaliation. Meanwhile, Parmesan brings the note found on Nina's tombstone to Mauro's house: it is a clue, albeit a weak one. Giulia suggests that Rea have Mauro help her in the investigation.

While Luca and Anna investigate the murder of a man who has just been released from prison after a rape conviction, Mauro expresses his anger to Giulia over Bondi's disappearance: the agent is convinced that the mole is Captain Rea himself. The commissioner is torn between his attraction to the man and Belli and Ardenzi's legitimate suspicions about the investigation into the ecomafia. Mauro and Roberto track down Bondi's acquaintance, Giacomo De Gregori, the owner of a transport company that received a lot of money from Liverani. When questioned, the man admits to having transported toxic waste on behalf of the broker and eventually gives up Bondi's cell phone, which turns out to be a false name. At that moment, Rea bursts into the X Tuscolano, furious at not having been warned of the developments in the investigation.

Mauro and Roberto deal with the case of criminal lawyer Paolo Silvestri, killed by one of his former clients, a criminal who had just been released from prison. The two agents track down Panessa's hideout but there they discover the man's body with his head smashed in and twenty thousand euros in his pocket. They will discover that Silvestri was divorcing his wife Lucia, also a lawyer who now shares the office with her colleague Bruno Cattaneo, her lover. The man had exploited Panessa's hatred to have Silvestri killed, of whom he was jealous, only to then also kill the murderer who asked him for more money. In the meantime, Parmesan has tracked down the address of Nina's partner through the cell phone given by De Gregorio: Giulia, Mauro and Roberto prepare a raid on the villa but the man has already been warned.

While Davide and Giulia wait in the hospital for Giuseppe Castaldo to wake up, miraculously alive after being wounded by Rea, Francesca and Roberto discover that the woman is pregnant. Mauro and Roberto follow the captain in the inspection of the house burned by Castaldo where Mauro discovers the fragment of an article in English that he gives to Germana to trace its origin: the photo shows Nina's face. Francesca is robbed by a drug addict who pricks her with a possibly infected syringe: after much research Roberto and Mauro manage to catch the thief who fortunately turns out to be HIV negative. Meanwhile Luca and Anna deal with the case of a young gay man beaten to death in his own apartment, perhaps by his gym mates who had discovered his diversity.

Mauro shows Roberto the photo from Somalipress that portrays the young Davide Rea with Nina, Terenzi and Castaldo. The two rush to Giulia's house where they discover that the captain spent the night there. Forced to remain silent, they ask Altieri to interrogate Castaldo again but when they arrive at the hospital the man has already been killed. They show the photo to Giulia who is shocked. Meanwhile, Luca and Anna investigate the disappearance of a beautiful dancer who came from the province to make her fortune: they will discover that Cinzia was on the eve of an important job that turned out to be an illusion; furthermore, disappointed by her best friend who stole her boyfriend, she chose to take her own life. Meanwhile, Rea understands that the boys of the X° Tuscolano have discovered something that concerns him closely.

Giulia seems to have fallen into a deep depression: she cannot accept the truth about the man she loves. In the meantime, Luca has arrested the drug dealer Nardi, who has sent his protégé Damiano to the hospital, beating him bloody. At the police station, while Luca is interrogating him, Nardi collapses and dies. The officer is suspended and investigated by two disciplinary inspectors for homicide. The autopsy confirms the head trauma as the cause of death but Francesca explains that the trauma can be older than 24 hours and manifest itself late with a sudden death. The colleagues will have to prove Luca's innocence in a short time also with the help of Giulia and the lawyer Sergio Premoli.

While Roberto and Mauro investigate the case of an artist who disfigured two young people with a solvent used in painting, Giulia interrogates Lieutenant Riva, suspected of complicity in covering up the disappearance of Captain Rea. The carabiniere firmly denies his involvement and the commissioner decides to have Luca and Anna follow him. Roberto and Mauro will be able to reconstruct the delirious plan for revenge of Rinaldi, the painter whose wife lost an eye due to a beer can thrown from an overpass while their car was in transit. With Giulia's help, they will save Daria, the last girl suspected of the act by Rinaldi, who will be arrested. Meanwhile, Luca and Anna continue their search for Captain Rea.

Rea shows up with Giulia, making an appointment at the amusement park. It's the moment of truth, to reveal what's really happening. The entire 10th Tuscolano is ready for the final showdown.

Following Giulia Corsi's transfer, her deputy Roberto Ardenzi becomes the new commissioner of the X Tuscolano. During the inauguration ceremony, a gang of ferocious robbers breaks into the villa of a rich notary, easily deactivating the alarm system. One of the criminals shoots the professional's twenty-year-old son in cold blood, killing him. The cruel action sparks the rebellion of the only foreigner in the group, the Romanian Artur, who is killed after he announces his intention to leave the gang. During the investigation, Mauro will meet an old classmate, Alessandro Berti, who now works with the Scientific Police, while the new inspector Irene Valli arrives at the X Tuscolano one day late.

Following an action conducted with the new commissioner Roberto, Mauro is taken hostage by the two brothers from Puglia led by the Neapolitan Gabriele, responsible for bloody robberies. Alessandro Berti of the Scientific Police offers himself as bait, allowing Roberto to hide and be taken to the hideout where his friend is about to be executed. After a terrible firefight, Mauro is freed by his colleagues. From this moment on, he will be paired with the new arrival, Irene Valli, with whom he faces the case of a psychopath who has barricaded himself in the house with a hostage. Meanwhile, Roberto and his wife Francesca, seven months pregnant, witness the death of a beautiful girl run over before their eyes, Eva Paulin.

The intuition of the new commissioner of the X Tuscolano Roberto is not wrong: behind the apparently casual death of the model Eva Paulin there is something more. The young woman, with the complicity of her brother Milo, stole precious objects from her rich clients. Milo has the commissioner receive a notebook that Eva had kept, before dying before his eyes. Meanwhile Mauro and Irene deal with the disappearance of little Marcello. The first suspect is the father, divorced for years, who had no right to see his son, but the story presents even more disturbing implications.

Francesca, found by her husband Roberto in a pool of blood in their home, must undergo emergency surgery. Both she and the baby are at risk of losing their lives. While Luca, Anna and Irene, investigating a strange accident with a dead person, discover that it is a rape with robbery involving one of their colleagues, Francesca regains consciousness and tells her husband about the attack she suffered at home. The attacker is Gaetano Maiorca, who came to collect the package sent by Milo Paulin containing the notebook kept by his sister Eva, which Roberto did not have time to see. While Mauro and Alessandro Berti go in search of a clue, Roberto must hide from his wife that their newborn baby is in the operating room, between life and death.

The newborn Francesco, son of Roberto and Francesca, is saved after a long operation. He is immediately celebrated by his siblings Michele and Mauretta and by the agents of the X Tuscolano. The new commissioner understands that he must deal with a character from the past, Cesare Carrano, today an important builder and instigator of the attacker of Francesca by Maiorca. He is also the father of Ruggero, the murderer of Milo that Roberto wounded before the escape, now a fugitive. While Irene, Anna and Luca collaborate with Alessandro Berti of the scientific police on two murders that have to do with the world of gambling, Mauro helps Roberto to deal with the most difficult case of his career: the kidnapping of Michele and Mauretta by Gaetano Maiorca.

The new inspector of the X Tuscolano Irene Valli finds herself involved in a robbery in the store, where she and her nephew Stefano, eleven years old, happen to be. The two criminals do not hesitate to kill the owner of the store and beat the boy. With the excuse of wanting to treat him, Irene manages to make Stefano escape, who immediately calls Mauro. When the officers arrive, one of the criminals flees, taking a customer hostage. The other is found killed together with a boy, Irene is on the ground unconscious. From the analysis of Alessandro Berti of the forensic science department it turns out that it was Irene's gun that fired. The inspector declares that she does not remember anything and is subjected to a severe disciplinary investigation. Mauro promises with the others to discover the truth to help her exonerate herself.

The 10th Tuscolano is dealing with a thorny affair involving a rising politician: his blue car has hit and killed an immigrant. Roberto does not give up and tenaciously sets out on the trail of the killer Ruggero, son of the building contractor Cesare Carrano. Mauro asks his friend Ardenzi for explanations about a secret that he has kept from him until now while, with Irene, he tries to prevent the fugitive from escaping.

Ruggero Carrano is in prison and the prosecutor Forti authorizes the interrogation by the commissioner of the 10th Tuscolano. But the father of the murderer and his right-hand man are preparing a plan for a spectacular escape, while Mauro and Irene investigate the case of a sixteen-year-old who died of an overdose; the surprise is that the boy turns out to be the son of a friend of Mauro, whom he protected years before.

The 10th Tuscolano is in turmoil over what happened during Ruggero Carrano's spectacular escape. Everyone questions their own life: Luca goes to visit his dying father; Parmesan reacts to his hypochondria; Vittoria and Ingargiola get closer again. Roberto confronts Cesare Carrano, but there to protect him from himself is the faithful Alessandro Berti.

Carrano's right-hand man kills the members of the commando that allowed Ruggero's escape and now demands more money. The leader of the group manages to save himself: when Luca and Alessandro arrive at the crime scene, the head of the forensic team understands that the massacre is linked to the criminal organization headed by the Carranos. Thus begins a hunt for the survivor coordinated by Roberto.

While Irene and Anna investigate a villa robbery that ended in tragedy, Roberto asks Alessandro to remain on the force at the X° Tuscolano. With his help and the collaboration of Parmesan and Luca, the commissioner tries to decipher the code of the notebook written by Ruggero Carrano, finally in prison after Gabrielli's arrest.

Alessandro Berti accepts the proposal of the commissioner of the 10th Tuscolano to work in tandem with Irene on the case of a murder that hides a trafficking of newborns. Roberto must deal with the legal expedients of the lawyer who defends Carrano: the request for a calligraphic expertise on the notebook that contains the details of the complex criminal organization managed by the entrepreneur, turns out to be a dangerous trap.

The 10th Tuscolano is busy hunting down two girls in their twenties who, in the space of a few hours, uncovered, burgled a boutique and stole a spider. The two seem intent on having a memorable day, but the youngest is eight months pregnant. Meanwhile, Roberto tries to corner Maiorca who has destroyed the coded notebook, the main evidence in the trial against the Carranos.

On the eve of the trial against Ruggero Carrano, in which Roberto should participate as the main witness for the murder of Milo Paulin, Carrano's machinations do everything to discredit the new commissioner. This is how Ardenzi ends up being investigated by the disciplinary team for the murder of one of their operatives, whom he threatened several times after the destruction of the coded notebook.

A young Lithuanian, Jelena, turns to the X Tuscolano. The girl, in shock, has just arrived in Italy with a friend and her sister, all three convinced of entering the world of entertainment. She managed to escape but the other two remained, drugged, in the hands of an Albanian couple who intend to force them into prostitution. The agents know they have little time, while Roberto helps Tiberio, Mauro's father, to face a big problem.

Cesare Carrano is studying a plan to get his son Ruggero out of prison, sentenced to twenty years for the murder of Milo Paulin. Parmesan receives from Roberto the task of demonstrating the responsibility of the entrepreneur, head of a large drug trafficking ring. Irene and Alessandro investigate the murder of a young courier in love with a married colleague.

While the criminal entrepreneur Carrano organizes his revenge, supported by Patriarca and his lawyer, the X° Tuscolano is mobilized for the kidnapping of the son of a very rich cement manufacturer. The kidnapper acts with original methods and does not seem so interested in the ransom he has asked for the same day. Vittoria and Ingargiola are instead dealing with a champagne thief.

After the latest developments in the Carrano case, Roberto decides to take a break to spend some time with his family. He leaves the district in the hands of Alessandro Berti who, with Anna and Irene, tackles the investigation into a badly cut batch of heroin. There are already two drug addicts on the brink of death. During the investigation, Valli loses her professional detachment and brings her personal history into the case.

Investigating an arson attack, Alessandro and Irene meet a colleague from the explosives department who suspects a young but repeat offender. Simonelli takes it personally because he saw his best friend die during a fire set years earlier by the same deranged man. But Irene realizes that things are less straightforward than they seem, while Roberto manages to arrest the perpetrator of the car bomb commissioned by Patriarca.

During a graduation party, a young and beautiful university professor is drugged and raped. But when she wakes up, Viviana doesn't remember anything and Luca and Anna will have to find out who took advantage of her. Meanwhile, Roberto, who has discovered Patriarca's home and hidden documents inside that concern a nursery, gets back on the trail of Cesare Carrano.

Cesare Carrano is declared a fugitive, along with his accomplice Patriarca. The entrepreneur's villa is seized and Parmesan and his nephew Christian are tasked with archiving all the objects. Meanwhile, Anna and Luca investigate the alleged accident that caused a Russian immigrant to fall from the fifth floor, discovering a universe of marginalization and degradation.

Irene collaborates with Anna and Luca in the investigations into the disappearance of fourteen-year-old Daniela. The case will bring back Anna's painful past. The confession of an accomplice of Patriarca, who was arrested, forces Roberto to track down Francesca: in fact, the boss has very dangerous intentions towards them.

After the attack on the children, Francesca accepts the escort. Roberto discovers that Carrano has managed to track down his wife through a detective agency contacted by an unsuspecting mediator. Irene and Alessandro deal with the murder of an actor, an alcoholic now adrift, found murdered in his own boat. His ex-wife will help them solve the case.

Roberto and Alessandro monitor the movements of the lawyer Grimaldi, the legal defender of Carrano, still at large with Patriarca. The other agents of the X Tuscolano are busy with the almost fatal attack on the young brother of a famous boxer. The investigations bring to light the boy's passion for clandestine betting and suggest the involvement of Nino who the night before almost lost an important match.

There will be the long-awaited showdown between Commissioner Ardenzi and Carrano, the one who is responsible for the death of Ardenzi's close friend, Inspector Mauro Belli.

Until the very end, the challenge between Ardenzi and Carrano, long-time enemies, reserves sensational twists. And it turns out that not everything is as it seemed.