: Indicates the file was distributed or indexed by the ETTV community. Cast & Credits G. Callen Chris O'Donnell Sam Hanna Kensi Blye Daniela Ruah Marty Deeks Eric Christian Olsen Hetty Lange Linda Hunt Director Eric Laneuville Writer NCIS: Los Angeles Season 4 Episode 20 Recap: Purity
: The investigation begins when a Navy lieutenant and a civilian die of cyanide poisoning after drinking water from the same communal jug at a bikini bar.
The specific naming convention in your query provides information about the digital release of this episode: : Sourced from a high-definition television broadcast. NCIS Los Angeles S04E20 HDTV x264-LOL[ettv]
: Callen goes undercover by attending a DNA rally, where he stages a fight with Sam to gain the group's trust.
In this episode, the OSP (Office of Special Projects) team investigates a potentially catastrophic chemical threat in Los Angeles. : Indicates the file was distributed or indexed
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: The team discovers the incident was a "trial run" by a radical protest group called "Designing a New America" (DNA). The group plans to release cyanide into the city's water supply to make a political statement.