The BAU team searches for a serial killer who is preying on married couples. Also, Hotchner looks to one of the team to fill JJ's vacant role.
Nate and Brenda find comfort thanks to Rabbi Ari's advice. Ruth's need to control the lives of Nikolai and Claire leads her to a surprising self-assessment. Federico's suspicions about an elderly woman's 'natural' death lead him to place Vanessa under scrutiny. A disgruntled former client files a lawsuit against Fisher & Sons.
Sarah, John, Cameron and Derek investigate the town connected to the destroyed factory, while Weaver sends her own man into town in search of a potential survivor.
A high-profile private investigator is the prime suspect when a couple is shot to death in Malibu. Meanwhile, Julie's schoolwork suffers as she tries to help a boy she likes.
