User Rating:0 out of 5
Callen goes undercover at a prestigious high school after a 15-year-old hacker compromises terrorist missions.
The investigation into the murder of a security guard at a train yard uncovers a terrorist threat aimed at a Los Angeles-based train.
A terrorist attack on Los Angeles is imminent after a nuclear detection device is stolen. The case reconnects Hetty with someone from her past and the relationship jeopardizes her career.
Download the TV Guide app for iPhone, iPad and Android!