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  • NCIS: Los Angeles Season 4 Episode20 | VIP SERVER 1
  • NCIS: Los Angeles Season 4 Episode20 | VIP SERVER 2
 

Purity

When cyanide in a communal water jug lethally poisons a lieutenant and leaves a Navy pilot in serious condition, the NCIS: LA team investigates whether this is an isolated incident or an early test for large-scale water contamination.

NCIS: Los Angeles Season 4 Episode 20
Apr. 09, 2013