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Who really laced Tylenol with cyanide? This true-crime series examines alarming theories behind the unsolved killings — and tracks down a key suspect.
Yotam Guendelman
Netflix
3

After cyanide-laced Tylenol kills multiple people across Chicago, police and the media scramble to spread a nationwide warning.
May 26, 2025

A key suspect maintains his innocence, even as authorities discover his suspicious past and possible motive. Tylenol unveils new triple-seal packaging.
May 26, 2025

Decades after the murders, a victim's daughter searches for justice — and uncovers forgotten evidence that supports a controversial theory.
May 26, 2025

Self - Reporter, CNN

Self - Tylenol Murder Suspect

Self - Daughter of Victim

Self - Illinois Attorney General