The Tylenol Murders
Criminal
00:00
The Extortion Letter - When Did the People Die?
In 2007, the FBI lab was able to lift layer by layer by layer of ink off of the envelope of the extortion letter. Victims had taken the poison Tylenol capsules two days earlier on September 29th. The Task Force didn't know back in the 1980s, or even the 1990s, when Lewis mailed the letter. They just know that they got it around the 5th and 6th of October.
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