World's Most Evil Killers S05E04 - Keith Jesperson

Episode Overview

The Happy Face Killer delves into the unsettling story of a serial murderer known for his eerie confessional letters, which he would conclude with cheerful smiley faces. These correspondences were directed at both the media and prosecutors, adding a disturbing layer to his already horrific crimes. The episode examines the mind of this killer and the impact of his taunting messages on those investigating the case.

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