As the team searches for a vigilante killer in Cleveland, Rossi's former Marine sergeant goes missing in Los Angeles; J.J.'s secret catches up with her.
The BAU searches Tallahassee for a serial killer who calls the authorities to report the crimes prior to committing murder.
A witness agrees to testify against a gang member after a community activist is gunned down; TV host Bill O'Reilly criticizes the police department.
While on leave as he mourns the loss of his wife, Director Vance uncovers surprising information.
During the autopsy of a petty officer who seems to have died of natural causes, an armed man holds Wade, Sebastian and Danny hostage in the morgue.