2025
1 Season
6.8
DocumentaryCrime
Who really laced Tylenol with cyanide? This true-crime series examines alarming theories behind the unsolved killings — and tracks down a key suspect.
Episodes
E1May 26, 202543m
Pain Killer
After cyanide-laced Tylenol kills multiple people across Chicago, police and the media scramble to spread a nationwide warning.
E2May 26, 202539m
The Bitter Pill
A key suspect maintains his innocence, even as authorities discover his suspicious past and possible motive. Tylenol unveils new triple-seal packaging.
E3May 26, 202537m
Sealed for Your Protection
Decades after the murders, a victim's daughter searches for justice — and uncovers forgotten evidence that supports a controversial theory.
