'NCIS: Los Angeles' Season 5 Finale Recap: Sam and Callen Get Trapped In a Submarine

On the season five finale of 'NCIS: LA,' a suicide investigation turns into a much bigger, much more dangerous case.

Watch 'NCIS: Los Angeles' Season 5 Spoilers [Video]

On the penultimate episode of the fifth season, the NCIS team will investigate a news reporter's claims.
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