“In The Line Of Duty” – After U.S. Ambassador Nancy Kelly narrowly escapes a terrorist attack at the U.S. consulate in Tunisia, Callen and Sam are sent on a secret, dangerous mission to obtain key evidence from the crime scene. Upon their return, the team seeks Kelly’s help to provide missing information, on NCIS: LOS ANGELES, Monday, Jan. 19 (9:59-11:00 PM, ET/PT) on the CBS Television Network. Julie Chen, host of THE TALK, guest stars as U.S. Ambassador Nancy Kelly.