History's Greatest Mysteries S3E12 · The Chicago Tylenol Murders

History's Greatest Mysteries

Season 3 · Episode 12 · The Chicago Tylenol Murders · 42 min

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.