Watch NCIS: Los Angeles Season 9 Episode 21 online via TV Fanatic with over 6 options to watch the NCIS: Los Angeles S9E21 full episode. Affiliates with free and paid streaming include Amazon, iTunes, Vudu, YouTube Purchase, Google Play, and Verizon On Demand.
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On NCIS: Los Angeles Season 9 Episode 21, NCIS investigates when a Marine is murdered by a rare nerve gas, while Deeks shares his dream to quit law enforcement.