NCIS: Los Angeles - Full Series Information, Trailer & IMDb Reviews
Watch NCIS: Los Angeles Season 4 Episode 20 online — it may be available on legal streaming platforms such as YouTube, Netflix, Prime Video, Hulu, Disney+, and others.
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.