Andres Perez-Molina

Sylvester ends up in critical condition after accidentally triggering an explosion during an investigation, but the team must remain focused on finding the culprit.

Four new residents begin work at the busiest ER department in the United States.

Bosco and Lisbon reluctantly join forces to deal with a kidnapping case. When it seems as though the hostage has no chance of survival, Jane comes up with an unorthodox plan to save the victim's life but Bosco refuses to put it into action.

Jenna is confronted about her incriminating video; Emily's mother wants to leave Rosewood; Aria learns that Ezra's new job will reconnect him with his former girlfriend; Melissa and Spencer get in a car accident.

Bosco and his agents are gunned down within the walls of CBI headquarters. With two men dead and Bosco in a critical condition, Lisbon and her team race to find the perpetrator. As the investigation progresses, it becomes clear that notorious serial killer Red John is responsible - and he has an assistant inside the department.

While working 36 consecutive hours, the doctors deal with a distraught mother of two sons who were in a devastating car accident.