After a fourth woman goes missing in as many months, the team is brought in to track down the guy before he kidnaps again. Hotch is asked to secretly evaluate Gideon to see if he is ready to work full time again.

The team of investigators tries to capture a serial arsonist who has been terrorizing a college campus.

Gideon and his team track down a copycat bomber terrorizing a quiet community.

The BAU team travels to San Diego to stop a rapist and murderer who commits his crimes in the middle of the day.

The BAU investigates the kidnapping of a U.S. District Attorney's daughter and determines the kidnapper isn't seeking money -- he's after her twin sister.

The BAU is asked to identify a killer who is shooting at victims in broad daylight, and the team works with local law enforcement officers to recreate one of the shootings.

The BAU profiles a serial killer who takes families hostage and lives with them as a father figure during what is supposed to be their family vacations.

When an undercover cop in Baltimore involved in a mob investigation goes missing, the BAU believes a serial killer rather than organized crime has something to do with his disappearance. The probe leads to several unsolved missing persons cases.

Elle, along with many others, is held hostage on a train in Texas by a paranoid schizophrenic who is convinced that the U.S. government is monitoring him. Hotchner and Gideon are forced to play into the man's fantasy to save the people he has taken hostage.

The team investigates the death of one teen, and the disappearance of another , which may be linked to a satanic ritual.

While Gideon is stuck at the office on crutches, the rest of the team travels to Tennessee to track down a killer who disembowels his victims and supposedly eats their organs.

When a young girl is abducted in broad daylight from a playground in a seemingly safe neighborhood, the BAU team initially believes her father is responsible. When he is able to provide an alibi, the team is forced to look for clues where the girl lives to determine who is really responsible.

The team travels to New Jersey where several people have been poisoned, one of them fatally with LSD, ten times more potent than the street version.

After interviewing a couple on death row for serial murders, Gideon suspects that the woman is actually innocent. But since she's set to be executed in two days, it's a race against time to prove it.

A serial killer reappears after 20 years of silence and contacts the BAU with the promise he will kill another victim in the next five days.

The BAU team believes a dangerous cult may be responsible for the mass murders of five college students in an empty house.

The BAU unit travels to NYC to investigate a series of murders that appears to have been committed by a vigilante conducting revenge on former criminals who have been released by the justice system.

Reid finds himself in danger when he falls for a starlet whose stalker has turned into a killer.

The BAU team travels to Mexico to aid in the capture of a serial killer who is targeting elderly women.

The BAU works to capture a serial killer who has evaded capture by altering his appearance.

The BAU works with the CIA to identify a mole within that organization, whose leaks are putting operatives at risk.

While on their vacations, each of the team receives a clue from a psychopathic killer challenging them to save his next victim.

The BAU team continues to unravel the clues given to each of them by a psychopath in order to save his most recent victim. Gideon decides not to focus on the personal aspects of the case. Rather, he tells the team to profile the killer as they would in any other investigation. Reid stays behind to work on a personal connection that could solve the case as one member of the team fights for life.

A young boy who had disappeared a year ago turns up for sale by a child pornographer on an online auction in Cleveland. A former profiler who now heads the FBI's Crimes Against Children Unit asks Hotch and the BAU to help her save the boy's life before it's too late.

The BAU has reason to believe a series of murders might have been committed by two people working as a team after the victims' families receive DVDs after each crime that includes psychological attacks.

The BAU is called to investigate a series of bank robberies after it becomes evident the crimes are not based on money because the robber abuses his victims by forcing them to undress before he leaves the crime scene.

The BAU investigates a serial rapist who had been attacking young women at religious schools and stopped for six weeks. He has resumed his attacks, but is now targeting a different demographic of women. Elle makes a decision that could end her career with the BAU.

The BAU travels to a small Texas community to investigate the murders of children. Meanwhile, Elle is having readjustment issues after being shot, and Hotch becomes worried about her when she misses a mandatory psych evaluation and isn't answering her cell phone.

After a man kidnaps three teenaged girls and locks them in a cellar, he tells them only two of them will live and they must choose which one will die. The BAU team takes the case when the mother of one of the girls travels to Quantico to ask JJ to intercede with the FBI on the girls' behalf.

The BAU travels to Seattle to identify and catch a serial bomber who has been terrorizing the city and targeting centers of automated techology. Working with the author of a science fiction novel that has become a guide for the bomber, the team attempts to determine why certain sites have been chosen as targets.

The daughter of high-powered diplomats, Special Agent Emily Prentiss joins the team, and she must convince Gideon and Hotchner she deserves the job based on merit and not on her family connections. The BAU is then called to St. Louis to investigate two serial killers who appear to be competing with each other. By setting a trap based on one killer's profile, the team creates a media event by which to capture the second killer.

Gideon, Reid and Prentiss travel to Guantanamo Bay to interrogate the leader of a terror sleeper cell being detained there after a chemical weapons dispersal device is discovered during a raid at a suspicious house. Working with Reid, Emily's fluency in Arabic proves to be useful as they scrutinize the suspect.

The BAU is called to investigate a series of murders of prostitutes in Washington D.C. and Reid suspects a teenager he met asking for his help is guilty of the crimes. The case becomes complicated when a congresswoman, who about to make a speech to praise the city's lower crime rate, threatens to take away the case if Hotchner calls a press conference to discuss it.

Morgan is arrested as a serial killer after he goes home to Chicago to visit his family. Because the detective making the arrest had used a profile provided by Gideon, the team travels to Chicago to help the local authorities find the real killer and exonerate Morgan.

Gideon is pitted against the scariest and most evil murderer in his entire career. When the BAU confronts the sadistic killer in a remote diner in the Nevada desert, the local authorities want to move quickly and make an arrest. But Gideon bides his time as he attempts to persuade the man, who has sworn not be captured, to reveal the whereabouts of a woman he is holding hostage.

The BAU is called to investigate after a wealthy couple is murdered in their home following a Super Bowl party.

In this conclusion of a special two-part episode, finding the serial killer becomes critical to the BAU when the team realizes Reid is being held captive and a live feed of him being tortured is shown on the internet. Meanwhile, Reid's troubled childhood is revealed in flashback sequences as he drifts in and out of consciousness.

The BAU becomes involved to prevent a possible race riot when the murder of four young black women in a mostly white New York suburb appear to be hate crimes.

The BAU travels to Houston to investigate a series of murders that have occurred near construction sites and abandoned buildings. Because the murders appear to be random, the team believes the killer could be a homeless person. Meanwhile, everyone is noticing an apparent change in Reid's behavior.

A case involving a serial killer believed to be copying Jack the Ripper takes Gideon to New Orleans after three victims are found with their throats cut. Once thought to have been killed in Hurricane Katrina, the discovery of a fourth victim in the French Quarter confirms the murderer is still alive. All the evidence and files had been lost in the flood, so the only clue the team has is the word "Jones" that the lead detective wrote on the wall just before he drowned. Meanwhile, Reid meets up with an old rival as he continues to struggle with the aftermath of being held hostage.

A serial arsonist who targets the homes of upper-middle-class families as they sleep is investigated. The BAU determines the arson victims are linked together through corporate development companies that have been accused of building on contaminated land.

Elizabeth Prentiss, a foreign ambassador and SSA Emily Prentiss' mother, seeks the aid of the BAU when a Russian immigrant is kidnapped and held for ransom.

The BAU is called to investigate after the bodies of missing people are discovered in a remote region of the Idaho wilderness. The gruesome find also leads the team to determine the unsubs have been hunting humans for sport.

When homeless persons begin going missing mysteriously from the streets in Kansas City, a local detective calls the BAU to investigate the disappearances.

When the prolific serial killer Frank returns and murders Gideon's girlfriend, Gideon takes off to find him without telling the team where he is going. The BAU must then profile Gideon as well as Frank to find both of them.

The team investigates a serial killer who is targeting women at a small college in Flagstaff, Arizona. The BAU shuts down the campus, creates a detailed profile of the unsub, and arrests a suspect. However, the team members begin to have doubts about themselves when another woman is killed while the suspect is in custody.

In Milwaukee, a series of women have been found murdered with their hearts crudely removed. The BAU is assigned to the case, but they are short three members: Gideon, who is missing, Hotch, who is on suspension and Prentiss, who resigns her commission to join the Foreign Service. Supervisor Strauss steps in as lead, but she doesn't handle herself well in the field.

The BAU travels to Portland to assist local authorities in investigating the disappearances of people who are new to the city and have no strong social ties.

When home invasions involve the murder of entire families, the BAU is called to Denver to identify the killers who possibly have been abused while in foster care.

The investigation turns to the family as the BAU and local authorities race against time to locate a young girl who has disappeared from a local shopping mall.

The team gains a new, familiar member and some growing pains while trying to find the latest victim of a killer who puts up wanted posters of his victims before he abducts them.

The team is called to Montana to investigate the case of four kidnapped and murdered women. When another woman disappears, the search leads to a man who apparently has assumed the identity of his dead partner.

A team member's life is put in jeopardy when the BAU investigates serial killings in Florida that appear to involve the occult and satanic worship. Garcia believes she has met her dream man, but her first date with him doesn't go exactly as she had expected.

As a team member fights for life, the BAU continues the search for an attacker that leads the unit to believe the assailant could be someone close to the investigation.

The BAU and local authorities in Los Angeles investigate gang-related serial killings that might possibly involve a famous comic book artist.

The new sheriff in Fredericksburg, Virginia, requests the BAU's assistance in the investigation of a series of mutilation murders that appear to mimic similar crimes that had occurred over two decades earlier.

When one teenager is found murdered and her best friend is abducted in Chula Vista, California, the BAU assists local authorities in determining whether the Witness Protection Program is involved.

After the contents of a self-storage unit purchased at an auction take the BAU to Philadelphia to investigate a series of murders, the local agent becomes the center of the case. To catch the killer, the team must profile the items inside the unit.

Rossi travels to Indianapolis to continue his investigation into the two unsolved murders that have plagued him for 20 years.

The BAU is called to Pittsburgh after an unusually high suicide rate appears to be the work of an Angel of Death.

The BAU is called to West Bune, a small town in Texas, to investigate what appears to be spree killings that involve a teenaged boy and his girlfriend.

The BAU is called to Miami to investigate a serial killer who appears to have a conflicted sexual identity.

The team members try to identify a stalker before he can attack a woman who is being stalked in Silver Spring, Maryland. Meanwhile, Hotch and Rossi are called as consultants on a possible battered woman syndrome murder case in Boston.

After a suspected serial killer wakes up from a coma, the BAU reopens the case and uses brain fingerprinting to determine if he really doesn't remember the crimes that had been committed four years earlier in Roanoke, Virginia.

The BAU faces one of its toughest cases when the team is called to New York City to determine if a series of random shootings is the work of one serial killer or a team of killers working together.

When an SUV carrying members of the team explodes, the rest of the team fights to save them and catch the terrorists responsible for the bombing.

A series of murders is linked to a serial killer executed a year earlier, and the BAU team must find the link between the dead killer and the new spate of crimes.

Reid and Prentiss are taken hostage when they go under cover to investigate possible child abuse at an underground cult.

The BAU joins the manhunt to catch a serial killer who conceals the manner of his crimes by staging car accidents.

The BAU investigates a series of murders that appear to be connected to a killer who jumps trains and chooses his victims based on their proximity to the railway.

While investigating the abduction of a young boy in Las Vegas, Dr. Reid starts to have dreams that might help reveal buried memories from his childhood.

As Reid's investigation of a young boy's murder in Las Vegas continues, he discovers possible connections to his own past.

When a narcissistic psychopath confesses he has killed seven people and more will die, the team must locate his latest victims before it is too late.

Agents Prentiss and Todd go undercover to profile a serial killer who uses skills of persuasion to lure women into danger.

The BAU team hunts for a serial killer who targets members of the police department in Phoenix, Ariz., a case that hits close to home for Morgan, a former cop.

The team investigates a serial killer who shoots luxury car owners on Southern California's freeways.

The BAU team suspects a member of an affluent community in Atlanta is responsible for the disappearance of a local young woman and that the suspect may have worked with an accomplice

The BAU team becomes involved in the case of a family working together to abduct young girls.

The mother of an abducted child works with the BAU to apprehend a serial killer who kidnaps, murders, and embalms his victims.

The team pursues a copycat serial killer who is recreating the techniques used by past famous murderers.

The team searches for a female suspect who uses her professional skills as a high class call girl to lure and kill high-powered executives.

Agent Prentiss has a personal connection to one of the victims in a series of deaths with religious overtones.

Agent Hotchner revisits the first case he worked at the BAU when details come forth that one of the deadliest serial killers in New England's history has struck again after a 10-year hiatus.

The BAU team must track down a serial arsonist who instills fear in a small town by setting fire to community meeting places and killing several residents in the process.

The team travels to Fort Lauderdale during spring break to find a serial killer who is targeting co-eds on vacation.

When profiling a series of child abductions and murders, the team discovers that one of the cases may not be the handiwork of the serial killer they apprehended.

When the team is sent a videotape from a serial killer detailing one of his crimes, they discover a hidden message asking them to help him stop his murderous ways.

An unsub who kills with his car is the subject of a BAU investigation.

When a new type of chemical warfare is released into the open air, the BAU must act quickly to find the source before any more innocent people are exposed.

The BAU tracks a serial killer who chooses junkies, prostitutes and the homeless off the streets of Detroit as his victims and takes them across the border into Canada, and an agent's life is in peril.

The BAU tracks a serial killer who chooses junkies, prostitutes and the homeless off the streets of Detroit as his victims and takes them across the border into Canada, and an agent's life is in peril.

As Rossi, Morgan and JJ profile a killer who is targeting an emergency room doctor, Prentiss realizes that Hotch is missing.

The BAU must determine what caused a disturbed man to murder several people at a pharmacy before he harms anyone else.

The BAU investigates a case in Rossi's hometown that involves both his personal and professional life.

A group of suspects with a pack mentality who kill for the thrill of it are the subjects of a BAU manhunt.

The team hunts a suspect who impregnates young women and has them give birth before murdering them.

The BAU team tracks a serial killer who keeps the eyes of his victims as souvenirs.

The BAU team investigates the mystery behind a trail of murders that all seem to align with the tour schedule of a rock star.

The BAU team is tracking down a family annihilator, but needs to take a break from the case to get advice from "The Fox", who is an horrific killer from the team's past. "The Fox" surprises the team with a ominous message for Agent Hotchner.

The BAU team races to help Hotchner find The Reaper and save his family before it's too late.

The team needs to reunite in order to solve a home invasion case, while Agent Hotchner may have to leave the team.

The BAU is called upon to profile the past of an ex-convict and help stop him after he escapes from custody and embarks on a violent killing spree.

An unusual personal obsession is at the center of a BAU abduction case. Meanwhile, Hotch struggles with his return to work.

A rash of startling teen suicides in a small Wyoming town is the focus of a BAU investigation.

The BAU follows the mental decline of a con artist whose schemes have become so complicated that he begins to eliminate the people involved in them.

A serial killer who targets random victims in highly visible places to create a sense of public fear is the subject of a BAU investigation.

The BAU is called by local authorities in Ashburn, Virginia, to profile a predator who may have been abducting children for at least eight years.

A truck driver is kidnapping women and disposing of them in random locations and the BAU must find out his motive in order to catch him.

The BAU team travels to San Francisco to investigate the murders of several homeless men and teams up with a separate group of BAU operatives who are working another case they think is connected.

The BAU team heads to Texas to track a serial killer targeting illegal immigrants attempting to make safe passage into the U.S.

The BAU team must profile a serial killer covered in tattoos who commits suicide, but leaves clues to the whereabouts of his last victim.

Garcia plays a crucial role in a case when she travels to Alaska with the BAU team to investigate the murders of several members of a small town.

The BAU team profiles a serial killer who uses the Internet as his hunting ground, bringing a whole meaning to the term "social networking".

A series of rolling blackouts in the city of Los Angeles lures a serial killer out of hiding, giving him renewed opportunities to continue his killing spree.

The BAU team closes in on the serial killer as he continues his murder spree throughout Los Angeles - with Detective Spicer's kidnapped daughter as his hostage - in the conclusion of last season's cliffhanger.

While JJ attempts to reunite a family whose daughter has mysteriously disappeared, her BAU family braces for the loss of one of their own.

When several women in Herndon, Virginia, are found murdered in a similar manner, SSA David Rossi reopens an unsolved cold case that has haunted him for a quarter of a century because he believes the original killer, who is suffering from Alzheimer's Disease, might have returned.

The team searches for a serial killer who is preying on married couples; Hotchner looks to a team member to fill JJ's vacant role.

The team pursues a serial killer targeting families in the Midwest; Morgan receives a visit from Ellie after she runs away from her foster family.

The team searches for a killer who has struck the past three years during Detroit's raucous pre-Halloween celebrations.

The BAU must catch a group of serial killers that is killing exotic dancers and leaving their bodies in the cornfields of Indiana.

The BAU becomes involved in the search for a kidnapped woman in the nation's capital after the body of a second kidnap victim is found in a Georgetown alley.

When an 8-year-old is found murdered on the Appalachian Trail, the BAU team goes deep into its forests in search of a man lurking in the wilderness who is targeting children.

The BAU searches inside a gated New Mexico community for a killer targeting women, and Hotchner looks to an FBI cadet with a unique past for help with the investigation.

Morgan suggests that a man has been rehabilitated and aids in his parole, but later regrets his decision when the man murders someone days after being released.

A series of bizarre, ritualistic murders brings the team to Miami; Reid experiences hallucinations and blinding headaches.

The BAU hits the road to track down a pair of young lovers on an interstate murder spree. Also, Prentiss hears frightening news from her former boss at Interpol.

The team investigates unusual murders in Los Angeles, and more information about Prentiss' past arises.

The BAU is called to upstate New York to investigate mysterious disappearances. Also, Prentiss gets some disturbing news about one of her former Interpol colleagues.

Prentiss enlists two former friends from Interpol to track down an old enemy, as Reid discovers clues that could help the BAU locate the parents of an autistic boy.

After a series of murders, Prentiss becomes suspicious of a former nemesis, and fears for the safety of her team.

As Prentiss faces off against Ian Doyle, JJ receives a call and returns to help them find Prentiss and capture Doyle before it's too late.

The BAU travels to Portland to investigate a suspected gang of murderers targeting a new victim each night.

The BAU members investigate targeted killings in Tampa as they cope with their feelings about losing Emily Prentiss.

The BAU hunts a stalker in San Diego who is targeting college students. Meanwhile, the team comes under Strauss' scrutiny in the wake of the loss of Prentiss.

The BAU is called to a North Carolina resort town after a woman is found badly injured and another woman is missing. On arrival, the team discovers these two women are not the only victims.

When the BAU is called to Florida after bodies are discovered buried in the ocean floor off the Jacksonville coast, the case hits home for Morgan because his aunt fears her missing daughter could be one of the victims.

As the BAU searches for a suspected human trafficking ring when the bodies of two missing persons are found in the trunk of a car, Unit Chief Aaron Hotchner intimates there could be changes within the team due to budget cuts as Jennifer "JJ" Jareau returns to the FBI. The team is also assisted by SSA Andi Swan, the head of the Domestic Trafficking Task Force.

The BAU team is at a crossroads as they are questioned by a Senate Committee for their retaliatory actions in the wake of Prentiss' loss, but an unexpected familiar face could help them win their case and keep the team together.

The BAU team searches rural Oklahoma when women are being found murdered after being robbed of one of their five senses. Also, JJ and Prentiss get the cold shoulder from Reid as he deals with their deception about Prentiss' presumed death.

The BAU team investigates a mass murder at an Internet security company in Charlottesville, Va., but clues reveal it is not a typical serial killer at work.

Survivors of a Boise high school massacre return to remember the event 10 years later, but the BAU team is called in when a new killer with a similar style targets the survivors. Also, Hotch is worried that his son, Jack, may be a victim of school bullying.

The BAU team investigates the abductions of young children with troubled mothers in St. Louis. Also, Rossi reconnects with his first wife who has shocking news for him.

The BAU search Californias Angeles National Forest after a number of bodies mysteriously turn up in the mountain lakes there. Also, Rossi struggles with an agonizing decision regarding his ex-wife, Carolyn.

When a series of tornadoes hits Kansas, the BAU is called in to investigate bodies of young boys that turn up in the aftermath of the storms. Also, work pressures cause tension on JJ's home front.

It’s personal for Garcia when the BAU investigate the disappearance of a woman in her survivors’ support group whose daughter went missing seven years earlier.

The BAU team looks into the real reasons behind an apparent mass suicide of a small group of youths at a military academy. Also, Hotch and Morgan butt heads when a team member could be in jeopardy.

The investigation of a series of bludgeonings in Philadelphia leads the team to the city's boxing scene; Hotch connects with a fellow runner while training for the triathlon.

A series of murders in San Francisco bearing the tell-tale signs of the infamous Zodiac Killer have the BAU wondering if the notorious serial killer has returned. Also, Reid ponders if he should be doing more with his genius abilities.

The team is called to Texas to search for a serial rapist in Houston known as "The Piano Man" who has returned and is attacking his past victims. Meanwhile, Prentiss begins to deal with the traumatic experience caused by Ian Doyle after returning to the BAU.

The BAU tries their luck in Atlantic City when the team is called in to investigate a series of ritualistic casino-related murders. Also, after a spat with her boyfriend, Kevin, Garcia thinks she and Morgan may have gotten a little too friendly with each other.

The team hunts a killer when bodies are found hidden in lifeguard towers on Southern California beaches.

The BAU team investigates a series of brutal home invasions and murders in California's Inland Empire that appear to be gang-related, but their investigation may uncover a more sinister motivation.

When the BAU travels to Atlanta to investigate the murders of women, the clues lead them to look for an unsub who is not working alone.

When married couples fostering young children end up being killed in Seattle, the BAU team looks for an unsub with a maternal-yet-murderous instinct. Also, Garcia fears a possible proposition from Kevin.

The team hunts for a kidnapper when an emaciated boy is found in the desert and another goes missing.

The BAU team heads to Oregon to investigate a series of gothic, ritualistic murders.

When Morgan's sister sees a woman who looks like their presumed-dead cousin, Cindi, it forces Morgan to confront a lie he told his family last year to provide closure and compels the BAU to reopen the case of her disappearance.

A serial killer is executed, in Oklahoma, a copycat shows up and the BAU are called to find him. Meanwhile, Prentiss gets nervous about a real estate purchase.

Rossi and the team teach college students the science of criminal profiling by taking the class through a serial-killer case that spanned 20 years.

When the BAU goes up against a gang of serial-killing bank robbers in Washington, D.C., the team tries to negotiate the situation unfolding inside the bank, but the stakes rise when one of their own becomes a hostage.

As the BAU team continues to pursue the bank-robbing serial killers, the team determines that the suspects have a bigger target in the Nation's capital, and with one of the team still a hostage, they must work quickly to diffuse an explosive situation. Also, wedding bells ring for one of the BAU, and Prentiss ponders her future.

When a Texas prisoner escapes during a transfer, he leaves behind victims with his unique trademark, sewing their mouths shut, a signature the BAU remembers as unique to the UnSub "The Silencer." While they investigate who he was and who he's become, the BAU also gets to know the newest member of the team.

When the bodies of two seemingly unrelated victims are found just hours apart in San Diego and Los Angeles respectively, the BAU suspects that that not one, but two killers are working together to commit these murders.

An UNSUB who kidnaps families with the intention of making them admit to and pay for their indiscretions.

When a legless body is found in the New Mexico desert and a second unwilling amputee shows up at the hospital, the BAU team searches for this amateur surgeon before he preys upon his next reluctant victim. Also, Reid's phone calls to a mystery woman have the team intrigued.

The team heads to Oregon as four men have gone missing.

When prostitutes in Miami are discovered murdered in a similar style to local animals found dead there, the BAU must work fast to find an unsub whose confidence is quickly escalating. Also, Morgan tries to increase Reid's athletic skills by convincing him to join the bureau's softball team.

The BAU travels to Santa Monica when burned bodies of homeless people begin showing up by the famous pier. Also, Rossi reconnects with his former Marine sergeant from Vietnam.

The BAU team goes in pursuit of a missing school bus full of children outside the Washington, D.C. area, and it becomes a race against time for them to bring them home safely.

An attendee at a popular motivational-speaker's conference in Seattle is murdered and the speaker himself disappears soon afterward. Meanwhile, Garcia is puzzled when Morgan refuses to attend a dinner honoring an old family friend.

A ritualistic killer is hunted after male bodies are found that have been physically altered. Meanwhile, Reid gets anxious at the prospect of meeting his mystery woman.

The BAU heads south to investigate a fast-moving UnSub whose signature matches that of a serial killer from 30 years ago. Also, the team learns that someone is tracking their cases and replicating crimes the BAU is solving.

When Reid discovers that his girlfriend has been kidnapped by her stalker, he and the BAU team band together to find her before it's too late.

While Reid copes with a loss in his personal life, the rest of the BAU travels to San Francisco to investigate victims discovered in the Mission District.

A writer's daughters vanish on the anniversary of their mother's disappearance, which leads the BAU to investigate the man as a possible suspect.

The BAU heads to Austin to investigate victims found there with their watches set inaccurately, a clue which may connect the crimes. Meanwhile, the UnSub stalking the BAU inches closer in his pursuit of the team.

When victims are found in Philadelphia in a similar style to victims of The Replicator, the stalker who has been tracking the BAU's every move, the team thinks this could be the break they need to try and apprehend him.

The BAU investigates victims who were documenting their personal lives and inner desires on blog posts and social media. Also, Kevin gets jealous when he learns Garcia may have a new love interest.

The BAU goes to Morgan's old neighborhood in urban Chicago in search of an unsub targeting middle-aged men, and a clue leads Morgan to believe that they are after someone connected to the man who molested him as a child.

When a time capsule in a small Colorado town is opened twenty-five years later and contains a gruesome discovery, the BAU investigates the crime and find a possible link to the death of a local police officer.

The BAU travel to Rapid City after two male victims are discovered murdered in a ritualistic manner. Also, Reid continues to grieve over Maeve’s death.

The BAU travels to Los Angeles looking for an UnSub who is kidnapping nannies and the children they care for on the same day each year.

The BAU goes to Detroit to track an UnSub with a rapidly changing MO. Also, Blake's husband returns from overseas with a life-changing career proposition for her.

The Replicator zeroes in on the BAU when the killer targets one of the team as the next victim. Also, the BAU is called in to investigate a string of deaths in Manhattan tied to apparent ecstasy overdoses, and Hotch discovers that his estranged brother, Sean, is caught in the middle.

The Replicator zeroes in on the BAU when the killer targets one of the team as the next victim. Also, the BAU is called in to investigate a string of deaths in Manhattan tied to apparent ecstasy overdoses, and Hotch discovers that his estranged brother, Sean, is caught in the middle.

The hunt for a methodical killer takes the BAU to Arizona to search for an increasingly devolving unsub, and the team speculates that Hotch is in the running to be the new BAU Section Chief following the death of Erin Strauss.

As the BAU zeroes in on the suspect of the ritualistic killings they've been investigating in Arizona, a bizarre connection within the unsub's family could lead them to finally nab the suspect.

When a sniper strikes Dallas, the BAU investigates whether the upcoming anniversary of the Kennedy assassination is a motivating factor or if something else is driving the unsub.

The BAU meets their new section chief, Mateo Cruz, who, unbeknownst to them, shares a long work history with JJ. Cruz joins the team as they comb the streets of Baltimore for an unsub who leaves victims unable to communicate.

As Hotch fights for his life due to complications from his stabbing at the hands of George Foyet, a.k.a. "The Reaper," he experiences visions of his late wife, Haley, and his nemesis, Foyet. Meanwhile, the BAU searches for a missing teenager and investigate her estranged father as a suspect in her disappearance.

The BAU are called to Utah to investigate the murder of a women who died by being buried under stones. All while Penelope plans a Day of the Dead party.

Though Rossi is sad because his favorite bar is closing, the team goes to Boston to solve a series of strangulations.

When teenagers who were reported missing are suspected of a series of mass murders in Chicago, the BAU investigates their whereabouts to find a motive for the crimes. Also, Morgan has conflicting feelings when his girlfriend takes her job at a hospital as seriously as he takes his.

When skeletons are discovered in the backyard of a home in Virginia, family secrets and past racial divisions are brought to light.

When a young boy goes missing from his home in St. Louis, the BAU reinvestigates a similar cold case to search for the UnSub.

When the BAU is called to Kansas City to investigate a series of murders, a tense reunion ensues between Blake and her father, a retired police captain, and her brother, a detective, who must work together to help solve the crime.

A murder investigation leads to Garcia delving into her hacker past -- and reconnecting with her former love.

As the team searches for a vigilante killer in Cleveland, Rossi's former Marine sergeant goes missing in Los Angeles; J.J.'s secret catches up with her.

When JJ is kidnapped, the BAU delves into her time at the State Department to find clues to her disappearance and uncover a secret mission that now puts her life in danger. To help with their search for JJ, the team calls upon Prentiss to help in the crisis

The BAU travels to Pittsburgh on the hunt for a pair of suspects that appear to be working together as a team; Garcia and Morgan reveal their Valentine's Day plans for their respective significant others to each other.

When a 4-year-old girl goes missing while staying with a relative in Mississippi, the BAU uncovers some startling truths as the team races to find the child and bring her to safety.

The BAU must determine the true cause and motive when several drowned people are discovered in the Las Vegas desert.

When three bodies are found with animal and human bite marks in a shallow grave near Milwaukee, the BAU has puzzling questions to answer. Meanwhile, Reid and Garcia work out for a company fitness test, but try to hide their preparation from Morgan.

Morgan's visit with a survivor of unusual stabbings in upstate New York leads to more questions about the case.

Two murder victims are found in a West Virginia backwoods community. The investigation reveals that the homicides may be linked to a long-simmering feud between two families.

The team searches for a commonality when a series of target abductions take place; Savannah is frustrated with Morgan's traveling.

Victims of arsenic poisoning are found in Long Beach. The investigation reveals that the killer has a fascination with Greek mythology, based on handwritten death threats to the deceased and other mysterious clues. Meanwhile, Hotch becomes concerned about participating in Jack's third-grade career day.

When prostitutes are murdered in Texas, their deaths seem to have religious overtones; members of the team are put at risk throughout the course of the investigation.

The investigation in Texas reveals a deep web of corruption; Garcia must save a friend.

The BAU team investigates a series of murders in Bakersfield, Ca, which have left the victims unidentifiable. New agent Kate Callahan joins the BAU fold, and assists in the effort to solve the cases.

A series of abductions and murders in Seattle send the BAU seeking an UnSub who was abused in the past and is out for revenge. Garcia heads to Texas to confront the man she shot while defending Reid and herself, as he waits on death row.

When a passenger jet crashes in Colorado, the BAU team is called to build a profile around the suspicious circumstances. The case hits close to home for Kate, who is reminded of a family tragedy.

The investigation into a series of mysterious deaths in Atlanta reveals the murders were likely committed by an UnSub with an obsessive skin disorder.

When a young boy who went missing in San Diego on Halloween suddenly reappears one year later, the BAU must work fast when another trick-or-treater disappears under similar circumstances.

The BAU is stumped to find the common denominator among male victims in Montana, making in difficult to profile the UnSub. JJ confronts her feelings about her sister's tragic death.

When victims with large social media followings are found dead in Maryland, the BAU searches for an UnSub taking on the persona of an Internet urban legend. Morgan and Savannah struggle to find quality time for each other with their busy careers.

When a prominent attorney goes missing in Boston, the BAU unearths secrets in his past which could point to the reasons for his disappearance.

The BAU investigates random murders in northern Virginia and searches for a conflicted UnSub who has an uncontrollable urge to kill but is also filled with remorse. Rossi receives a visit from a woman who could hold a secret from his past.

When the BAU is called to Salt Lake City Utah to investigate a triple homicide, the search for a connection among the victims could lead them to a fugitive who could have ties to the UnSub.

When frozen bodies are found in Nevada floating in water, the BAU’s investigation leads them to suspect that the victims were part of a cult that could be behind the deaths. Also, JJ confronts old demons from her abduction and torture last year.

The BAU searches Tallahassee for a serial killer who calls the authorities to report the crimes prior to committing murder. Also, as Rossi prepares for a weekend visit with his daughter, Joy, he receives startling news about the death of a comrade in Vietnam.

The BAU revisits its origins when they look at one of Rossi and Gideon’s old cases to track a killer that got away.

When an Indianapolis coffee shop is blown up and a hero emerges from the wreckage, the BAU tries to protect that person and his family while searching for the UnSub before more incidents occur.

Victims in California have the BAU searching for an UnSub who may have witnessed abuse as a child. Meanwhile, Kate shows parental concern when her niece, Meg, makes a date with a friend to meet a boy they met online.

When two guards at a privatized maximum security prison in Texas are murdered, the BAU suspects that more than one UnSub within the prison could be at work.

The BAU is called to Wisconsin in search of a serial killer, and the team looks for a connection among the victims for clues to the UnSub. Also, Kate has trouble dealing with her niece, Meg, when she begins acting out.

When the wife of an up-and-coming congressman disappears, the BAU investigates his political enemies as possible suspects.

When a family of four is abducted while on vacation in Barbados, the BAU is called to assist Unit Chief Jack Garrett and his International Unit on their investigation. Garrett and his unit, the FBI's top division for handling cases involving Americans abroad, work jointly with Hotch and his team when they discover that this case matches one the BAU investigated last year in Florida.

When a Maryland family is found murdered at their dining room table, the team tracks down other family members and friends to uncover secrets that may have led to it. Also, Hotch must try to make peace with his father-in-law, Roy, after discovering he’s been diagnosed with Alzheimer’s.

When three people implicated in murders claim they were attacked by a “clawed shadow monster” at the moment each crime occurred, the BAU searches for an UnSub who is controlling their minds. Also, the search for the culprit puts one of the team in jeopardy.

When shooting victims are found in the Los Angeles area with possible links to criminal activity, the BAU searches for a vigilante UnSub.

When Kate's niece and her best friend Markayla are kidnapped, the BAU suspects an online predator engaged in sex trafficking who poses as a teenage boy.

The BAU is interviewing different candidates to join their ranks in the wake of Kate’s departure, including a forensic psychologist, Dr. Tara Lewis, who is eager to assist their efforts. Also, the BAU hunts for a serial killer who leaves behind distinctive evidence that points to someone intent on revenge.

When a Los Angeles bus is attacked with sarin gas, the BAU must act quickly to find the suspect before a larger-scale incident occurs.

When brides-to-be in Savannah are killed on the eve of their nuptials, the BAU suspects a jilted UnSub is at work.

When three restaurant workers are killed in a robbery/homicide in Las Vegas, N.M., the BAU looks at a cold case that happened in the town six years ago for leads.

When the BAU investigates incidents of bodies being incorporated into macabre graffiti art in Detroit, they suspect an elusive-yet-notorious street artist could be the UnSub. Also, Dr. Lewis struggles to balance her relationship with her fiancé and her work.

When a woman is murdered in a small town in Florida inhabited entirely by sex offenders, the BAU faces a community full of suspects. Also, Lewis receives a career opportunity that may take her away from the BAU.

The BAU helps Rossi’s journalist daughter, Joy, investigate the disappearance of a college student. Also, the team is alarmed when Giuseppe Montolo dies in prison after he warns Morgan about the “Dirty Dozen,” an underground group of hitmen, and JJ returns from maternity leave.

Victims are kidnapped in Phoenix and forced to endure sleep deprivation. Meanwhile, JJ copes with exhaustion from juggling work and caring for her newborn son; and Hotch and Garcia deal with threats from the "Dirty Dozen," an underground hit man group.

After two undercover DEA agents are murdered and a third goes missing, the BAU joins the NSA to investigate whether an underground Internet drug syndicate is involved. Also, Hotch hopes the team’s work with the NSA brings them closer to finding the “Dirty Dozen” hitmen ring.

The BAU searches for an UnSub who may be fascinated with medical experimentation.

The BAU implements an elaborate strategy to try and take down the “Dirty Dozen” hitmen ring, with Reid playing a central role.

When bodies are discovered in public places throughout Boston, the BAU investigates whether a taxi or ride-share service the victims used before their deaths could lead the team to the UnSub.

The BAU searches for a motive and an UnSub when victims are found in truck stop restrooms along highways throughout the South.