The BAU team up with the organised crime unit when a congressman's wife is held to ransom. Plus, could there be love in the air for Spencer?
Torres is forced to revisit her troubled past when her half-sister is incarcerated in a juvenile corrections facility.
The doctors treat the members of a cult who survived a mass suicide attempt; Mario wants to connect with his late father's girlfriend.
The team reopens the 1970 murder case of a 20-year-old musician, Billy, who was secretly instrumental in creating the popular Philadelphia soul sound.
A group of protesters breaks into the NYPD precinct after the police are suspected of killing an unarmed man. Mac and Flack find themselves caught up in the chaos as the team makes a fast move to try and solve the case.