Chicago Tylenol Murders: The Unknown Wanderer

Theories of the Third Kind · Sep 24, 2026 · 49m

In September 1982, seven people around Chicago suddenly died after taking Extra-Strength Tylenol capsules that had been secretly filled with cyanide. The killer was never caught, and more than four decades later, the Chicago Tylenol Murders remain one of America's most infamous unsolved crimes.

Then, only a few months after the poisonings, a mysterious man was found dead from cyanide inside a Catholic church in Boise, Idaho. He carried no identification, left behind $1,900 and a note signed with a fake name, and successfully hid his identity for more than 40 years.

He became known as the…