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

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.

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

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.

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.

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.

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.

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

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.

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 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.

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.

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.

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.

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

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

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.

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.

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.

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.

Derek Morgan brings the BAU a lead in the case against serial killer and escaped convict Mr. Scratch.

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.

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.

When Morgan is abducted, the BAU scrambles to find him and save his life.

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.

The BAU is shocked when Hotch is apprehended by a SWAT team and suspected of conspiracy, and as the team scrambles to prove his innocence, they suspect a larger plot is on the horizon.

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 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.

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

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.

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.

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

When an UnSub targets the BAU, and the team goes into action to find out who is responsible.

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

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

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

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.

After a father and daughter get kidnapped, a former foe of the BAU returns with very specific demands for Dr. Reid that give a whole new meaning to the phrase “wheels up".

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

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.

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.

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.

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

Away from the watchful eye of the FBI's assistant director of national security, Linda Barnes, the BAU meets in secret to investigate an UnSub who appears to be kidnapping and photographing young women.

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

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.

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.

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

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.

When Reid fears his mother has been abducted, he asks the BAU to investigate while he's stuck in prison.

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.

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.

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 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.

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.

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.

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

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

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.

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

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.

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 members of the BAU enjoy a Saturday off in vastly different ways. While Rossi and Prentiss help Simmons assemble a new crib, Garcia leads a hacking competition, and Dr. Reid strikes up a conversation with a woman named Maxine.

It has been a year since Rossi nearly died at the hands of Everett Lynch, a.k.a. “The Chameleon,” and he has developed some new theories, with inspiration from his former partner, Jason Gideon. The BAU team sets out on an epic hunt to capture Lynch.

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

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

A surprising connection forces Deputy Director Bailey to ask the BAU to take a case involving young D.C. socialites who are bitten by a sadistic UnSub. But when the case turns political, the BAU finds themselves in the crosshairs from a high-powered senator. The team is led to a second shipping container that’s rigged to blow.

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

When Reid and Garcia are abducted by Benjamin Merva, it's up to the rest of the team to find them. The BAU finds surprising clues in their own history to solve why the two heroes have been targeted by a mass murderer. It's a race to save them before a Believer's prophecy is fulfilled.

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.

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

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.

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

When Reid discovers former FBI Special Agent Owen Quinn locked inside a storage unit, the BAU questions the credibility of Quinn's bizarre accounts of searching for an UnSub that he named "The Strangler".

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

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.

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.

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.

Rossi and Lewis enlist the help of Ramona, Voit's sole survivor, to help unlock Voit's memory. JJ and the team say goodbye to Will.

When guards at a Virginia prison intercept a package with evidence relating to the kidnapping of two boys several years ago, the BAU questions a notorious serial killer who may have information on the boys’ whereabouts.

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.

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.

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.

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.

As the team hunts an UnSub who severs spinal cords, they uncover a clue from their last case that points to a serial killing network. To figure out how big this network is, Rossi has to convince a reluctant Garcia to do the one thing she doesn’t want: come back to the BAU.

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

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.

When an 18-year-old girl escapes from a suburban home where she was held captive for years with two other women, the BAU searches for the Unsub who kidnapped them.

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.

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.

Following an explosive face-to-face encounter with Everett Lynch, a.k.a. “The Chameleon,” Dr. Reid suffers from a brain injury and, while experiencing hallucinations, is visited by ghosts from his past. Also, the BAU makes a shocking discovery about Lynch that affects Rossi personally, and the entire BAU team comes together to celebrate Rossi’s retirement.

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 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.

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

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

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.

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.

In the wake of a devastating attack, the BAU works with former International Response Team member Matthew Simmons to save one of their own from escaped serial killer Peter Lewis.

Rossi will go to any lengths to prove that Elias Voit is Sicarius. But Voit turns Rossi into his own worst enemy, putting his future at the BAU in jeopardy.

When the team works to hunt down the person who shot Tara, they discover "The Disciple" deliberately had them chasing their tails. While undergoing critical surgery, Tara gets to the root of her relationship issues.

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

The BAU is called to Taos, N.M. to investigate an UnSub who is targeting his victims' temporal lobes.

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 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 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.

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 bodies wash up on the Maryland shoreline, the BAU races to find the UnSub. After surviving a prison attack, Elias Voit has been placed in a medically induced coma while Rossi is investigated for the incident.

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

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 for an UnSub who is purposely disfiguring victims. Also, Rossi has an awkward reunion with his ex-wife, Hayden Montgomery, who kept his daughter, Joy, a secret from him for nearly 30 years.

Reid has returned from Houston, where he was visiting his mother who is in a new facility on an experimental drug program. He is called back home from the office while the rest of the team heads off on their next case. It isn't until the team is in the air that they learn that Diana is no longer in the Houston facility, but that she is now living with Reid, as the trial drug was not having the intended effect.

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.

The BAU team heads to Portland, Ore., to investigate a chilling abduction that may be linked to a local couple killed in their home a week earlier.

When the BAU team travels to Denver to investigate several murders, Prentiss is forced to evaluate her relationship with Special Agent Andrew Mendoza.

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 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.

When a series of backyard pool homicides are reported in California, the BAU team searches for an UnSub with a puzzling past.

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.

The BAU is called to New York when several casualties of a brutal nature are reported in Central Park.

The BAU team is called in to investigate when male victims are found with no way to identify them.

The BAU investigates the "Moving Day Murders" and track a ritualistic killer with a twisted method of subduing his victims. Tyler goes rogue to track down the latest Gold Star lead. Prentiss is targeted by conspiracy theorists.

The BAU is faced with more Gold Star killing with the same gruesome M.O. Elias Voit says goodbye to his family. Prentiss wrestles with the fallout of her run-in with Brian Garrity. Garcia hacks the cloned phone brought in by Tyler Green.

Prentiss and the team fly to Iowa to investigate the disappearance of three 10-year-old children who appear to have been abducted from their homes in the middle of the night, with surveillance video from a neighborhood park as their only lead to finding the children’s whereabouts.

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

The BAU team’s investigation into the home invasion and attempted homicide of a police chief’s wife uncovers a world of secrets in a small town in Virginia.

JJ works with Dr. Ochoa to help Voit process the truth about his violent past, and tells him that one of his followers has a message from a mysterious unsub who appears to be organizing the remaining members of Voit's serial killer network.

The BAU is called to Oklahoma to investigate a murderous clown terrorizing the sleepy town of Guymon.

When an UnSub in Miami sensationalizes his crimes by giving the local media exclusive footage, the BAU is called in to investigate.

The BAU investigates a string of murders taking place in supposedly haunted houses in Lewiston, Maine.

The BAU steps in to help local law enforcement isolate a prime suspect for a ritualistic murder in Tallahassee, Fla., and soon after a second person who is related to the first victim is killed under similar circumstances. Prentiss is concerned about Garcia’s behavior in the aftermath of her abduction and has an idea of how to help with the healing process.

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

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

The BAU investigates a double homicide and kidnapping in New Hampshire. Rossi's plans to elevate his relationship with Krystall don't go as planned.

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.

The BAU travels to Chicago to investigate an unsub who leaves red roses on each victim. Also, Rossi gets an unexpected visit from his ex-wife, Krystall Richards.

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

Alvez and Garcia profile who might be targeting Tyler's ex-girlfriend. JJ helps Prentiss work through an existential hangover. When Rossi's Voit delusions reach a breaking point, Rossi confronts Voit and unpack what has been truly haunting him.

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 team investigates a network killer who buries his victims alive, and Tara confronts Rebecca's ex who has recently re-entered her life. Ronald Graber delivers a message from his Disciple to Voit.

The BAU enlists Voit to help capture Jade and Damien, the UnSubs behind the Gold Star killings. Damien and Jade get the upper hand and the BAU must watch as Voit tries to negotiate with them in order to avoid a mass casualty event.

The BAU races to capture the vigilantes behind a series of attacks taking place every 27 minutes in the nation’s capital. Prentiss and Unit Chief Andrew Mendoza lead the effort to identify the Unsubs and what’s motivating them.

Prentiss faces her past when the BAU is sent to investigate the murders of prominent businessmen, all of whom are missing their hearts. Also, Prentiss plans a romantic first date with Mendoza, but the evening is cut short by an urgent call from Rossi.

The BAU searches for an unsub in Austin, Texas, who is targeting prominent members of the community.

The BAU is called when the New Orleans P.D. discovers a mass grave inside a vandalized above-ground crypt in a local cemetery.

The BAU must determine what connects six people that each received a mysterious package in order to identify the Unsub. Simmons and his wife deal with their son's suspension from school.

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

Several women go missing in Virginia and the BAU must figure out what they all have in common in order to find them.

When successful businessmen in Detroit are targeted by an anger-driven power-assertive Unsub, the BAU is called in to investigate.

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

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

The BAU is called to investigate a series of deaths in Virginia suspected by the Center for Disease Control to be caused by bio-terrorism; Garcia visits her stepbrother to take care of a family issue.

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 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.

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

BAU team investigates a series of home invasions in upscale neighborhoods in San Diego involving casualties.

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.

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 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 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 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 team searches for a serial killer along the Appalachian Trail in rural Virginia.

Prentiss and J.J. are faced with important decisions to make about their futures as the BAU travels to Beaumont, Texas to investigate a series of murdered businessmen.

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

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.

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.

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

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.

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.

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 professor from Lewis’ past tips off the BAU to an alarming number of overdose deaths of patients who just completed rehab.

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 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.

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

Network UnSubs torture and kill hostages as Voit works with the BAU to stop them. Rebecca's ex, Evan Delray, is appointed Voit's new liaison.

Following a series of fatal shootings, the BAU team travels to Des Plaines, Ill. to investigate what appears to be a copycat serial killer. Their efforts are thrown off track when members of the BAU are targeted.

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 heads to Bethesda, Md., to investigate four murders in the span of three days along the eastern seaboard. The crimes become personal for Alvez, when the team discovers there are ties to his time spent five years ago working alongside the DEA and the Mexican police force in pursuit of the most notorious hitman in Mexico. Alvez and his girlfriend decide to move in together.

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.

When three women in New York City are found dead with several bones broken, the BAU works with a single mother (Tatum O'Neal) who believes that her son is behind the heinous crimes. Meanwhile, Reid faces a difficult decision after a fellow inmate is threatened.

The BAU is called to investigate a series of D.C. homicides where cryptic messages are found inside the mouths of each victim.

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 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 investigates three similar crimes in which victims' remains are discovered in old suitcases.

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 investigates a workplace shooting committed by a state-of-the-art drone in Silicon Valley.

When the mummified remains of numerous victims are found in the walls of an elderly couple's remote South Carolina home, Rossi, JJ and Simmons are dispatched to track down a trail of clues that date back over 20 years. The hunt becomes urgent after BAU learns the killer has a specific ritual of when to strike, and like clockwork another person goes missing. Rossi reconnects with his ex-wife.

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 BAU investigates if bullying may be the link between two high school students who are the sole survivors after both of their families are killed.

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.

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.

The BAU team investigates a series of seemingly random fatal explosions throughout Kentucky and Tennessee.

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

The team heads to Yakima, Washington when the remains of a dozen people are found along a creek bed.

With Jade on the run, the BAU continues to assemble the pieces connecting Gold Star victims to Aida Limited. Jade and Dana follow Voit’s breadcrumbs to the heart of the “conspiracy.” A search warrant execution by the BAU has deadly consequences.

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 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.

When two members of a conspiracy group in Roswell, N.M., perish in quick succession, the BAU is called to investigate.

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.

While the team works an organ harvesting case, Voit's recovery process leads him to suspect he is more likely a prisoner than victim. JJ finds a cryptic video posted to the BAU-Gate website of a masked UnSub that could be connected to Voit's network.

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

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.