Three decades. Eleven states. Over 600 bodies. Across the United States, college-aged men have ended up dead in rivers, lakes, and ponds. The deaths have been ruled accidental drownings, but a team of retired detectives believes a small, smiley-face shaped clue points to something more nefarious: a gang of serial killers. To help dissect the Smiley face Killers theory, Vanessa is joined by producer Chelsea Wood and hosts of the podcast The Murder Sheet, Áine Cain and Kevin Greenlee.

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