NCIS: Los Angeles: Watch Season 5 Episode 21 OnlineCarla Day at .
The box is back! It gets taken off the shelf and opened on NCIS: Los Angeles Season 5 Episode 21.
Kensi and Deeks return to duty as partners once again and get a tough case. They interrogate a master manipulator and undercover NCIS agent. He turns the tables on them and questions their relationship.
In the field, Sam and Callen attempt to determine whether or not the undercover NCIS agent has gone native or not.
Watch NCIS: Los Angeles online now.
Carla Day is a staff writer for TV Fanatic. Follow her on Twitter and on Google+.