'NCIS: LA' preview: Eric Christian Olsen and boss tease big 'reveal' in two-part episode 'NCIS: LA' boss on the season finale and the explosion that could spell disaster for the team -- EXCLUSIVE ...
Chris O’Donnell, who starred for 14 seasons as G. Callen on NCIS: Los Angeles, is moving to Music City for his next leading role on the Ryan Murphy/ABC spinoff, 9-1-1: Nashville, Deadline reports.