Aired Friday June 11, 10:00pm - 11:00pmon CBS Justice
NCIS: Los AngelesSeries 4 Episode 20: Purity
When cyanide in a communal water jug lethally poisons a lieutenant and leaves a Navy pilot in serious condition, the Los Angeles team investigate whether this is an isolated incident.
- Action / Adventure / Crime drama / Mystery
- Original air date
Cast and crew