When three women are found murdered in a similar manner, the BAU heads to Los Angeles to investigate the strange deaths; Emily Prentiss' past is revealed.
A city bus crashes into a building, stories in the air, after the Hollywood Reservoir dam breaks; Maddie searches for a trapped cyclist in need of rescue.
Newly divorced Crystal Renay nervously attends her friend Gocha's pool party; there's tensions between Crystal and her ex's ex friends Malaysia and Tameka.
McCoy's former colleague, Jamie Ross, returns as a defense attorney to represent a previous client who has key evidence concerning a prisoner on death row.
A frustrating investigation of a purse-snatching victim, who was fatally shot, leads to tension between Briscoe and Green over age and racial innuendoes.
A school bully with an avid interest in martial-arts weapons is accused of killing a boy, and the bully's father is responsible for buying the murder weapon.
Bloodstains in an apartment that belonged to a young couple with a baby leads to the separated parents, each of whom claims that the other has the infant.
McCoy finds a powerful matriarch to be a difficult opponent during the course of the trial, when the focus of the case returns to an influential family.
Two patrol officers will be implicated in the brutal murder of a Caucasian teenage girl in Harlem, leading to a public outcry and the quest for answers.
A killer attracts the BAU's attention by shooting drivers on the freeway, and they believe he is murdering surrogates until he can go after his intended victim.
A man is suspected of being a rapist and murderer, and after a woman is abducted, the team decides to interrogate him, which leads them to a shocking clue.
After a young woman is abducted, the BAU investigates the case, which involves a family of suspects, but things are more complicate than they expected.
The team tracks a killer who likes to embalm his victims, and a victim's mother tries to help with the case by hiring a psychic, who clashes with Rossi.
After a criminology student is found murdered, the BAU team hunts for a suspect who is recreating the techniques used by famous serial killers from the past.