NCIS: Los Angeles

CBS | 9:00 pm

In a new episode called "Sundown," Special Agent Rountree (Caleb Castille) goes undercover and Sam (LL Cool J) opens negotiations after a man takes a busload of passengers hostage and threatens to blow up the vehicle unless his late daughter's war crimes are posthumously cleared. Gary DeMayo, Mo Rodvanich and Jacqueline Obradors guest star; Chris O'Donnell and Linda Hunt also star.