Dr. Engels joins Vanessa in this episode of Conspiracy Theories, Cults, and Crimes for a Crime House crossover! 

Dozens of young men, all found drowned. A single eerie clue near every crime scene: a painted smiley face.

Uncover the dark origins of the Smiley Face Killers theory — a decades-long investigation that suggests a nationwide ring of serial murderers might still be active.

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