The BAU members face questioning by a Senate Committee for their actions to avenge the loss of Prentiss, but an unexpected familiar face keeps the team united.
The BAU team searches rural Oklahoma for a murderer robbing women of their five senses; Reid gives Prentiss and J.J. the cold shoulder as he deals with their deception.
The BAU team investigates a mass murder at a Virginia Internet security company and believes the suspect is not a typical serial killer; Prentiss must complete recertification training under Morgan's watchful eye.
The BAU team must act when the survivors of a Boise high school massacre from 10 years ago are targeted by a new serial killer.
The BAU team investigates the abductions of young children with troubled mothers in St. Louis; Rossi reconnects with his first wife who has shocking news for him.
The BAU search a California forest after a number of bodies turn up in the mountain lakes there; Rossi struggles with an agonizing decision regarding his ex-wife.
When tornadoes hits Kansas, the BAU is called to investigate bodies of young boys that turn up in the aftermath of the storms; work pressures cause tension on J.J.'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 investigates the real reason behind an apparent mass suicide at a military academy; Hotch and Morgan butt heads when a team member could be in jeopardy.
The BAU searches the boxing scene in Philadelphia for a killer with a blood lust; Hotch makes a connection with a fellow triathlete.
A series of murders in San Francisco bearing the marks of the Zodiac Killer have the BAU wondering if the notorious serial killer is back.
The BAU team go to Houston when a rapist known as “The Piano Man” returns to assault his previous victims; Prentiss tries to come to terms with her trauma from last year and with rejoining the team.
The BAU team tries to beat the house when they investigate a series of casino-related murders in Atlantic City; Garcia wonders if she and Morgan became too friendly after a fight with her boyfriend.
The BAU team discover a series of bodies hidden in lifeguard towers along the coast of southern California.
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.
The team investigate the murders of women and the clues lead them to look for an killer who is not working alone.
When married couples fostering young children end up dead, the team looks for a perpetrator with a maternal yet murderous instinct; Garcia fears a possible proposition from Kevin.
When a young boy is found in the desert and another boy goes missing, the BAU begins searching for the kidnapper as Morgan tries to bond with the found child.
The BAU team investigates a series of ritualistic murders.
When his missing cousin reappears, Morgan is forced to confront a lie he told to protect his family - and makes the BAU team reopen the file on her disappearance.
After a notorious serial killer is executed, a copycat begins murdering women in the same Oklahoma town and in the same fashion. The BAU team must act fast before more victims are found.
Rossi and the team teach college students about the science of criminal profiling, as they look back on a serial killer case that spanned nearly 20 years.
The BAU goes up against a gang of bank-robbing serial killers and the stakes rise when one of their own becomes a hostage. Part one of a two-part season finale.
The BAU continues to negotiate with the serial-killing bank-robbers; one of the team gets married; Prentiss ponders her future. Part two of the two-part season finale.