The Tylenol Murders
Criminal
00:00
James Lewis and the Handbook of Poisoning
Investigators used the information to get a search warrant for Lewis' condo in Cambridge. They also found fingerprints, multiple fingerprints belonging to James Lewis in The Handbook of Poisoning. A fingerprint on page 196 details how much potassium cyanide is needed to kill the average human. But there is a time gap for James Lewis from September 25th to midnight of September 29th. That falls in the window in which investigators believe the poison bottles were put on the shelves.
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