Bruce Katzman

Seattle Grace institutes a "date-and-tell" policy after the nurses complain of Mark's trysts; Cristina is forced to confront her feelings about Preston.

As Carlos continues to serve his jail sentence, Gabrielle valiantly tries to free him. Meanwhile Mike and Susan face a crisis in their relationship, and Paul Young returns.

As Garcia fights for her life, the team are determined to track down the man who shot her and figure out whether a serial killer is threatening her life.

As Hotch fights for his life after being stabbed, he has visions of his late wife and his nemesis; when a teen goes missing, suspicions arise about her estranged father.

When a terrible explosion at Dell's house lands Betsey and Heather in the hospital, everyone is pushed to the limit trying to save their lives. Tensions rise even higher between Addison and The Captain.

Peggy moves to the City of Angels to help Chief Daniel Sousa at the West Coast Strategic Scientific Reserve investigate a bizarre homicide involving an alleged killer and Isodyne Energy, and reunites with some familiar faces.