History's Greatest Mysteries (2020)

History's Greatest Mysteries (2020) : 3x12

The Chicago Tylenol Murders Min.
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Overview

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.