As the holiday's approach, Kelly and Sipowicz get a early gift in the form of a hot tip while investigating the kidnapping of a young girl.

Licalsi tries to plea bargain his case and only get six years in prison for the murder, but Kelly is greatly opposed to the bargain after realizing he's in love with Janice. After learning that Kelly still has feelings for Janice, Robin ends their relationship. Meanwhile, Sipowicz and Kelly go on a stakeout of an apartment complex that have been the target of several robberies.

Licalsi takes the stand during her trial. The Internal Affairs Bureau investigates Kelly and Sipowicz in regards to the arrest of Officer Guyce and Officer Quint. Meanwhile, Kelly, Sipowicz, Medavoy and Martinez investigate the murder of a black couple.

Kelly investigates the death of an undercover cop in Chinatown, and to do so he must accept help from a prominent Chinese gang leader. Meanwhile, Sipowicz finds out that a former abuse case he had worked on has escalated into homicide; and Medavoy and Donna’s relationship is revealed after Lt. Fancy catches them in the act, leading to Fancy warning the precinct against interoffice relationships.

Kelly’s future with the force is decided as he investigates the death of an 18-month old baby shot in a drive-by while riding in a car driven by Duane Rollins. Though everyone believes the act was random, Kelly believes that Rollins was the intended target. Meanwhile, Sipowicz finds the body of a cop, and must continue dealing with both his commitments to Alcoholics Anonymous and his feelings for Sylvia Costas.

In Kelly’s absence, Detective Bobby Simone joins the force and is assigned to work with Sipowicz on a case involving the murder of a mob member’s son. Later at the precinct, her boyfriend, Detective Jimmy Abruzzo, threatens Detective Lesniak with a gun; and a woman claims her husband is sexually abusing her 14-year old daughter.

A chiropractor’s wife is found murdered and Simone and Sipowicz discover that the chiropractor, Dr. Peter Shennon, was having an affair with his secretary, Judith Krasky, which turns all suspicions towards him. Meanwhile, while working for a security company, Martinez falls for Leticia Beltran, a college student he’s assigned to protect. Later, a woman, Christine Williamson, brings Simone a gun she found her 11-year old son playing with.

An 11-year old boy admits to killing an Hispanic student in the midst of a turf-war at his elementary school, but Simone has a suspicion that the boy is taking the fall for someone. When a ladies’ man, Eddie Reyna, learns he’s HIV positive, he becomes targeted by one of his former lovers that he infected with the disease. Meanwhile, Donna’s sister, Dana, comes to town for a visit, which causes a rift between Donna and Medavoy.

Sipowicz and Simone are assigned to the case of a pregnant woman who was murdered and the only charred remnants remain, which means there are few clues for the detectives to go by. Meanwhile, Sipowicz grows increasingly concerned when a close friend, Dan Breen, is badly beaten by his mentally handicapped son, Danny.

Simone and Sipowicz investigate the murder of a gay bar proprietor and have transsexual Candace La Rue as a material witness. Dan Breen decides to visit his mentally disturbed son, Danny, despite Sipowicz warning him not to do so. Elsewhere, Medavoy investigates a fortune telling scam after a woman is conned out of her life savings; and Lt. Fancy’s wife goes into labor.

Detective Soloman tries to use his status to steal a case from Detective Simone after Simone arrested a notorious serial killer, Putnam. Meanwhile, Commander Haverill tricks Lt. Fancy into lying about a case involving a crime lord; Lesniak goes after a flasher; Sipowicz once again proposes to Sylvia Costas; and Benita Alden, a reporter, flirts with Simone.

Simone and Sipowicz follow hot on the trail of the “Webster Dictionary” serial killer, though bureau politics take their toll on the case. Meanwhile, Sipowicz uses Vinnie Greco as an informant in order to try to stop a bank heist; and Lt. Fancy enlists Greco’s help in order to get even with Commander Haverill.

The detectives investigate the brutal murder of a young woman. Their investigation leads to one main suspect – Derrick Cobb, the girl’s former stepfather. Simone worries that one of his close friends, Raymond diSalvo, has gotten involved in drug dealing at a dance club. Lesniak investigates con artist Mac McClellan.

Three fast-food employees are murdered execution-style. As Simone and Sipowicz investigate the murders, Martinez and Lesniak look into the attempted rape of an elderly woman. Meanwhile, Sipowicz and Sylvia Costas have differences when it comes to planning their wedding; and Martinez becomes jealous when Lesniak has lunch with an old friend, Dr. Druzinski.

Simone and Sipowicz investigate the death of a pimp, but all evidence they find points to one of their own, Jerry McCabe. Medavoy’s constant jealously causes Donna to rethink their relationship and Simone begins to worry that Benita Alden is using him for her career gains.

Simone and Sipowicz are assigned to investigate Vartan Illiescu, an immigrant suspected of being a terrorist. An unknown person kills George Putnam, a serial killer, out of revenge before he can be tried in court. Meanwhile, Medavoy and Donna’s relationship crumbles after Medavoy gets advice from Dana.

Simone and Sipowicz are put on the case of a teenager known for his graffiti work who was brutally murdered. Meanwhile, Donna continues to contemplate her relationship Medavoy; and Sylvia is mugged, which results in a deep secret being revealed to Sipowicz.

Simone has to convince Joyce Novak, a witness in a double-homicide case, to testify. Sipowicz is assigned to investigate the murder of an elderly woman who was the owner of a candy store he worked at when he was growing up.

A man goes on a shooting spree, killing a waitress, two cops and three other citizens before he was apprehended. Meanwhile, Lt. Fancy speaks on behalf of Reggie after Reggie squares off with Sgt. MacNamara.

Simone becomes attracted to an undercover cop, Diane Russell, as they work together to capture an arsonist. Sipowicz becomes personally involved in a case after a woman he convinced to testify in a case is murdered. Martinez and Lt. Fancy square off at the annual department boxing tournament.

Help comes from an unexpected place as Sipowicz and Simone investigate the murder of a bookie. Joyce Novak, a witness to a murder, charges Simone with sexual harassment. Meanwhile, Sylvia and Sipowicz head to religious counseling to prepare for their upcoming nuptials.

An ill infant becomes the missing link in a serial rapist case Simone and Sipowicz are investigating. Simone suspects Russell of trying to cover up a serious problem; Medavoy considers getting back together with his wife with whom he is separated; and Irvin asks Simone for help when police officers assault him and his lover.

Sipowicz tries to get a confession and capitalizes on a mistaken identity. Lt. Fancy’s brother is falsely accused of accepting bribes and Simone is able to uncover the truth behind the crime. Russell’s apparent hangover almost results in a hazardous situation during a sweep. Later, the precinct throws a bachelor party for Sipowicz, who is noticeably dealing with pre-marriage jitters.

Martinez is shot when he and Medavoy walk in on a bar robbery. One of the robbers gets protection from the DA for information, which upsets James' colleagues. Sylvia breaks some news to Sipowicz, while Simone and Russell try for a reconcilliation.

An ill man is accused of killing his sister, but Simone suspects otherwise. Meanwhile, Medavoy and Sipowicz go under cover to recover a stolen Jewish icon. Sipowicz struggles to keep a secret.

Simone and Sipowicz get a break in a rape case when a man fitting the assailants description is seen in the station. Russell has to resolve her families domestic problems. Meanwhile, Martinez, on his first day back, gets some disappointing news from Lesniak.

A baby and a small child are shot and killed in a robbery. Sipowicz's bad mood hinders the investigation and causes a rift with Simone.

Ronnie Drucker, a detective under investigation, is reassigned to the 15th squad and compromises Simone. A young girl, confused by drugs, is the only witness to a shooting in a laundromat.

Simone and Sipowicz investigate the murder of an Indian woman, found strangled in her locked car. Medavoy and Martinez arrest a man acting strangely and find he's involved in a credit card scam. Lesniak and Russell team up to trap a gun dealer. Simone gets over-protective and makes Russell angry.

An ex-boxer, an old friend of Simone's, refuses to admit he's getting forgetful. The FBI take over a kidnap case, but Simone and Sipowicz find an informant and work the case on their own.

Simone's old pal Ray turns informant, from jail, in order to get a reduced sentence, but things don't go to plan. A father takes deadly revenge to protect his bullied son. Medavoy has to placate 2 actors who come to blows on stage.

A young girl is found stabbed, in Chinatown. Suspicion falls on the ex-boyfriend. Simone & Sipowicz Investigate. Martinez & Lezniak have to investigate a robbery, together, despite the bad feeling between them. Medavoy moves into the bunk-room.

A basketball game, held in the memory of a young boy, erupts into violence. 2 dead, 7 wounded. Andy has a race relation's problem with the organizer of the event that was witnessed by a reporter. Fancy and Sipowicz's relationship is on shaky ground as details of this event come to light and Andy is removed from the case.

A girl's body is found, burned, in an abandoned basement. Information from the husband of the girl's best friend points to a Russian, who had tried to date her, but had been refused. Simone puts together a scenario, involving the husband and 2 of his associates. Medavoy gets some overtime, on bodyguard duty and gets lucky in the card school.

A bruised and battered wife tells Sipowicz that her husband claimed to have killed somebody 8 years previously. Sipowicz follows a trail, leading back to 2 previous relationships. Russell is told that her father has been shot and killed. Her brother claims to have done it, but Simone thinks he's not telling the whole truth.

Russell gets a lawyer for her mother. Simone and Sipowicz investigate the shooting of a known mobster's son. Suspicion falls on his younger brother, but the father interferes with the search. Medavoy and Russell get a call to where a woman has been shot, while in bed. Her son tells Russell that he got a message, from his step-father, confessing to the shooting. His rich step-father's lawyer makes difficulties.

Martinez and Lezniak's relationship takes a step forward. Simone and Sipowicz are called to a bloody murder scene with satanistic overtones. A doctor is mugged and shot on a visit to his secretary's apartment. Russell and Medavoy feel the wrath of his wife's anger.

A University Professor is found decapitated. His mother gives Simone and Sipowicz a hard time. Lezniak gets jealous when Martinez meets a porn star. Andy's son turns up, out of the blue.

After a young girl is strangled and thrown from a roof, Simone and Sipowicz find a similar case in another district. The investigating officer comes to the 15th, to share information and immediately gets in Andy's bad books. Russell and Martinez disagree over the claims of rape made by a woman, against a married schoolteacher. Sipowicz and Andy Junior go 'on the street'.

Medavoy and Martinez investigate the murder of a voodoo priest. Russell gets assigned to help a drug enforcement team, working in the Precinct. Simone spots an old acquaintance, Hollie, who used to give him good information.

A dead man is found, dumped in an alley. His name has possible mob connections. Donna gives Russell information about a possible hi-jack. A surveillance op goes wrong, when Simone and Sipowicz assist the FBI.

A woman is found, murdered, in her apartment. Neighbours fingers point at the junkie nephew. Simone and Sipowicz investigate. Medavoy and Martinez search for a biker, seen in a bar, where the bouncer is beaten to death. Sylvia nears the end of her pregnancy.

After a shooting at a bar, Simone and Sipowicz are sent to the hospital and find that they know one of the victims. The whole squad is involved in the hunt for the killers.

The hunt for AJ's killers continues.

Simone and Sipowicz go to a shooting at a paint shop. A suspect is located in hospital, with a bullet wound. The other detectives go to a shooting in an alley, where the victim has bullet holes, but no sign og blood.

Greg and Andy consider going on a diet. Simone considers his feelings for Diane. A body in a trunk leads to a gun chase and the hunt for the killer. The squad greet a new PAA.

Det. Morrissey enlists the help of Andy and Bobby on his missing child case. Cotelli and Martinez tout for votes in the election for officer's rep. Medavoy and Sipowicz start their diet plans.

Simone struggles to make sense of the shooting at the apartment block, which he now owns. Meanwhile, he and Sipowicz re-open an old case, which may have imprisoned the wrong man. Greg and Andy weigh-in at the end of the first week's diet. The result is out for the Delegate's election.

An old adversary of Sipowicz's is killed in a drug related shooting. Andy and Bobby have to investigate his involvement. Medavoy and Martinez search for the killers in a grocery store shooting.

A 'Prince' is robbed of expensive paintings. Martinez gets his first case as Delegate. Russell goes under cover.

A Limo driver is shot. Witnesses blame it on the passengers. Simone and Sipowicz search for his last clients. A new female detective joins the squad and immediately gets involved with a man receiving death threats. Simone helps Savino search for the killer of the girl shot through the peep-hole.

A mother claims her daughter has been raped by a gang of prep school boys. Simone investigates. Rusell is having problems working under cover. Sipowicz has to interpret the ramblings of a mentally disabled young man.

Simone and Sipowicz investigate a street shooting when witnesses name a man who is supposed to be in jail. Macey, a young man who was previously in the care of Lt. Fancy, is caught carrying drugs. Medavoy meets with more disappointment.

Russell wakes up in Jimmy Leiry's bed and doesn't know what happened. There's been a strangling in a mainly Polish community. A man is found shot dead, in a quiet neighbourhood. Everybody knows him, but nobody saw anything.

A young thief tells Medavoy and Martinez about a body in an apartment. Simone goes after Jimmy Leiry.

Two diamond dealers claim they've been robbed of over 1 million dollars worth of diamonds - and the sister of one of them is involved. Gina is attacked at knifepoint and ends up in hospital.

Sipowicz and Russell have a heart to heart. An off duty cop, involved in a shooting, causes a rift between uniform and plain-clothes when Simone and Sipowicz investigate. A young girls body is found in a rubbish skip.

A man, found hanging, places suspicion on a precinct PAA. 2 rival groups of manual workers confront each other and one of them is killed.

A junk yard owner finds the body of a tortured woman in the boot of a car. Gina returns to work. A man, with massive head trauma, is found on a vacant lot, next to where he lives.

Lt. Fancy falls fowl of an over zealous patrolman. Sipowicz is reminded of his son's death when he and Simone investigate a series of bar hold-ups. Martinez, Medavoy and Russell have to deal with a confidence trickster.

A dead woman, found in an alley appears to be another in a series of brutal rapes. Simone and Sipowicz investigate. The rest of the squad tries to find out why shots fired from a bus injured a woman and a child.

3 Latino men shoot another, who's walking with his girlfriend, in what looks to be a gang related feud. Martinez and Medavoy search for the killer of a man in a car repair shop. Russell and Kirkendall investigate the death of a baby, while in the care of a child-minder.

2 male transvestites, previous acquaintances of Russell's make a complaint against a boyfriend. The parents of an old school friend of Kirkendall's accuse their daughter of theft.

Rap star 'Daddy Kool' is shot but refuses to cooperate with the police, to catch the shooter. Lt. Fancy is accused, by a uniform cop, of setting him up to rob a drugs dealer. Medavoy gets a proposition.

A shooting in a Hispanic club leaves 3 dead and 5 wounded. A mother claims her husband beat her and raped her daughter. Medavoy awaits a call for his services. Simone is approached for information.

Medavoy and Martinez search for a man who hijacks a bus to get people home quicker. Simone gets into trouble with IAB. Sipowicz does his best to protect a witness to a robbery and rape.

Simone gets caught between the FBI and IAB. Sipowicz and Russell investigate the death of a woman after getting a warning from her Psychiatrist. Medavoy and Martinez have to tread carefully when dealing with a reporter who has been mugged.

Simone visits his dentist who asks him for help with his daughter's drug problem. A rich man's son is found tortured and killed. The father blames his son's 'gay' lifestyle, and names a possible suspect, but Simone and Sipowicz uncover a different story. A young girl is reluctant to tell the truth, after an attempted rape. Russell and Kirkendall enlist the help of the girl's mother.

A shoot-out leaves 2 dead and a third injured when a drunk, off-duty cop witnesses an attempted mugging. The cop can't seem to get his story straight and angers ex-drunk Sipowicz. The cop's boss wants him to take the blame, but Sipowicz wants the truth. Russell has to take Simone to hospital when he becomes ill, during the investigation.

Simone's condition starts to worsen, requiring more tests. Sipowicz, Medavoy and Martinez investigate the death of a man found in the park, with his pants down. Sipowicz gets tetchy, over the lack of information from the hospital.

As Simone's condition worsens, Lt. Fancy makes a request to the Uniformed Officers to be aware of the need for a usable heart. Simone's colleagues have to occupy their minds with the case of an old lady found hacked to pieces in her apartment. Of her two sons, one doesn't seem to care about it and the other is too full of drugs to understand what has happened. Sipowicz's mood gets him into a fight.

Simone's recovery is hampered by a chest infection. The doctors differ in their opinions of which treatment to use. Sipowicz's ex-wife turns up at the station, drunk and asking for his help.

New squad member, Danny Sorenson, arrives and gets sent to a drive-by shooting, with Sipowicz. The rest of the squad, including Russell on her first day back at work, attend another shooting. The two incidents are related and cause friction between the two teams of investigators. ADA Costas asks Sipowicz to look into an old case she has reservations about.

Sipowicz and Sorenson are called to a robbery, where the aged shopkeepers have been beaten. The woman dies and Sorenson is affected. They hunt 2 black youths who were seen running away from the store. Russell and Kirkendall are sent to a 'Gentleman's Club' where a client has been killed. One of the girls implicates an ex staff member as the possible killer. Sgt. Dorning admits his doubts to Sipowicz, about an old case.

Confusion reigns as an off-duty cop shoots an undercover cop after taking a bullet in the shoulder. When the first shooter confesses to Sorenson, it triggers Sipowicz and Lt. Fancy to renew their own private little war. Russell and Kirkendall, meanwhile, are busy investigating another crime involving a member of the precinct staff. ADA Costas is still worrying over the death, in Ryker's Island, of a man she helped put inside.

Kirkendall's son witnesses a stabbing in a convenience store. Sorenson and Russell join forces to try and protect him from getting caught up in the 'system'. Medavoy and Martinez have to get their hands dirty to solve the killing of a vagrant with lots of enemies. Sgt. Dorning helps ADA Costas and Sipowicz with the Suarez case.

Russell is still struggling with the loss of Simone and enlists Kirkendall's help. ADA Costas looks for ways to get Freddie Asuncion and clear Luis Suarez's name. The whole squad is involved when a supermarket is robbed and an off-duty cop is killed. When the FBI and Internal Affairs become involved, it opens old wounds for Sipowicz and Sorenson.

A close friend of Sorenson's takes the law into his own hands when he confronts a groper on his bus route and puts his life in danger. A female tenant points the finger at a male tenant, when another female tenant is found strangled and beaten to death. Sorenson becomes her confidant in order to get to the truth.

When a man's body is found shot and dumped in an alley, Medavoy and Martinez have to calm the victim's angry brothers. Russell and Kirkendall get a confession to rape and murder while searching for a missing schoolgirl. The squad's PAA is missing and her friend believes he knows why.

When a dead hooker is found on a building site, her identification causes problems for Russell and Kirkendall. Sipowicz and Sorenson are called in to assist Lt. Fancy and Sgt. Dorning, who then find themselves in a dangerous situation. Russell gets a visit from an acquaintance of her late husband.

A 9 year-old girl is found dead inside a locked basement, the supervisor is the only key-holder, but he has an alibi. Sipowicz and Sorenson have to solve the whodunit. Medavoy and Martinez help an old man to trace the person who swindled him out of 8000 dollars. Sorenson's sister comes to visit him. Dolores father turns up at the squad room.

Sipowicz has a nightmare about his father and Officer Dorning. A Police Officer shoots a drug dealer but can't prove that the dealer was armed. Sorenson and Sipowicz use all their resources to help him. Russell and Kirkendall try to settle a dispute between a convicted mobster and his Polish neighbour.

Sorenson's private life affects the whole squad when his girlfriend turns up at the station. A body is found in a dumpster. The squad get a lead when the dead man's credit card is used.

Sipowicz and Sorenson have to find out who is responsible for a woman dying, after she was tied up during a robbery. The rest of the squad get involved in solving a truck hi-jacking. Information on the possible culprit comes from ex-detective Roberts, who also passes on a warning.

Ex-detective Mike Roberts is found dead, in an apparent suicide. John Irvine, the PAA, reveals his conversation with Roberts, to Sipowicz. The squad set up a sting to trap a suspect.

Officer Dornan disrupts an AA meeting, leaving Sipowicz no option but to involve Lt. Fancy. Dolores' father threatens to take action against Malcolm Cullinan and gets PAA Irvine into trouble. Sipowicz and Sorenson search for the pusher who supplied Mike Roberts. ADA Cohen continues to express his jealousy, over Kirkendall.

A man is shot dead in what his wife claims was a case of mistaken identity. Kenny Priest gives his evidence to ADA Costas, who has replaced ADA Cohen. Sinclair, Cullinan's lawyer, tries to goad Sipowicz.

Mike Shannon brings in a young boy who makes a confession to Sorenson. Sipowicz worries about his up-coming court appearance facing Sinclair. ADA Costas takes care of him. Dolores father attends the court hearing.

Sipowicz stays away from the squad and tries to come to terms with his loss. Evidence comes to light implicating Cullinan in more misdeeds and Sorenson turns to Sipowicz for advice. John Irvine is released from hospital, but is reluctant to return to the Precinct.