Turn off light

History’s Greatest Mysteries Season 3 Episode 12

A series of unexplained deaths near Chicago in 1982 starts a nationwide panic; the victims are connected by one frightening detail: cyanide-tainted capsules of Extra-Strength Tylenol; 40 years later, it remains an active FBI investigation.

Episode Title: The Chicago Tylenol Murders

Air Date: 2022-05-16