NCIS: Los Angeles Season 4 ( Air Date 2012-09-25 ) Genre Action & Adventure, Drama, Crime, Mystery category. Overview "The exploits of the Los Angeles–based Office of Special Projects (OSP), an elite division of the Naval Criminal Investigative Service that specializes in undercover assignments.".
NCIS: Los Angeles Season 4
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- Watch: NCIS: Los Angeles Season 4 on CWR-CRB
- Stars: Chris O'Donnell, Daniela Ruah, Eric Christian Olsen, Medalion Rahimi, Caleb Castille, Gerald McRaney, LL Cool J
- Director: Shane Brennan
