NCIS: Los Angeles - The Fourth Season

The fourth season of NCIS begins as team leader Callen (Chris O'Donnell) tries to clear himself of charges implicating he murdered a suspect in cold blood, while operations manager Hetty Lange (Linda Hunt) faces a threat from her past. The rest of the team, meanwhile, double their efforts to track down a dangerous terrorist despite uncovering a secret that puts those closest to former Navy SEAL Sam Hanna (L.L. Cool J.) in danger.