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.

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

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.