Synopsis
Who really laced Tylenol with cyanide? This true-crime series examines alarming theories behind the unsolved killings — and tracks down a key suspect.
Episodes
Season 11
Pain KillerAfter cyanide-laced Tylenol kills multiple people across Chicago, police and the media scramble to spread a nationwide warning.43m2
The Bitter PillA key suspect maintains his innocence, even as authorities discover his suspicious past and possible motive. Tylenol unveils new triple-seal packaging.39m3
Sealed for Your ProtectionDecades after the murders, a victim's daughter searches for justice — and uncovers forgotten evidence that supports a controversial theory.37m
Pain KillerAfter cyanide-laced Tylenol kills multiple people across Chicago, police and the media scramble to spread a nationwide warning.43m2The Bitter PillA key suspect maintains his innocence, even as authorities discover his suspicious past and possible motive. Tylenol unveils new triple-seal packaging.39m3Sealed for Your ProtectionDecades after the murders, a victim's daughter searches for justice — and uncovers forgotten evidence that supports a controversial theory.37mCast
