Watch NCIS: Los Angeles Season 12 Episode 15 Online. Best and Free Online streaming for NCIS: Los Angeles TV Show. We picked the best sites to stream s12e15. Simply pick a site below and click "Watch Now!" button next to it. Some of the links may be broken, please upvote the working and good links so other users see those links for NCIS: Los Angeles Season 12 Episode 15 s12e15 at the top of the list.