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Tylenol murders mystery deepens after sheriff’s office solves decades-old ‘Unknown Wanderer’ cold case
An Idaho sheriff's office identified a man who died of cyanide poisoning in 1982 as Dr. Mathew Francis Betkouski, an organic chemist, raising questions about a possible link to the unsolved Chicago Tylenol murders. Investigators are not naming him as a suspect and could not place him in Chicago during the fatal week.










