NCIS: Los Angeles

Season 4 Episode 20: 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.

Genre:

Action & Adventure, Drama, Crime, Mystery

Seasons:

14

Episodes:

323

Actor:

Chris O'Donnell, Daniela Ruah, Eric Christian Olsen

Quality:

HD

Status:

Ended

First Air:

2009

IMDb:

7.5