World's Most Evil Killers - Season 5, Episode 16 - Keith Jesperson - Full Episode

Keith Jesperson, known as the 'Smiley Face Killer,' brutally killed at least eight women across five American states in the early 1990s.

An in-depth look at the lives and crimes of some of the world's most evil killers, including Jeffrey Dahmer, Ted Bundy, Richard Ramirez, Cary Stayner, Leonard Lake, Dorothea Puente and more.

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