Ncis.los.angeles.s04e20.hdtv.x264-lol.[vtv].mp4 May 2026

The investigation begins when a Navy lieutenant is lethally poisoned by cyanide in a communal water jug. The team quickly discovers this was merely a trial run for a much larger attack by a radical protest group known as "Designing a New America" (DNA). Their goal—allocating the defense budget to education—is noble on the surface, but their method is murderous. Standout Moments & Character Dynamics

: The episode features interesting trivia about "Prussian blue," a pigment used as an indicator in cyanide tests and a treatment for radiation poisoning. NCIS.Los.Angeles.S04E20.HDTV.x264-LOL.[VTV].mp4

Review: NCIS: Los Angeles Season 4, Episode 20 – "Purity" "Purity" is a high-stakes, technically intriguing episode of NCIS: Los Angeles that leans heavily into the team’s undercover capabilities. Originally aired on April 9, 2013, the episode centers on a domestic terrorism plot involving cyanide poisoning. The investigation begins when a Navy lieutenant is