History's Greatest Mysteries
The Chicago Tylenol Murders
TV-PG
S3 • E12 May 15, 2022 42m7.4
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.
