NCIS: Los Angeles

After they complete a successful sting operation, three FBI agents are killed in an explosion, sending Callen, Sam (Chris O’Donnell, LL Cool J) and their colleagues on a chase to find who’s behind that attack. Meanwhile, Kensi and Deeks (Daniela Ruah, Eric Christian Olsen) realize the cat’s out of the bag about their “secret” relationship when Hetty (Linda Hunt) pairs her with Sam and him with Callen in the repeat episode Fighting Shadows. (CBS)