
Who really laced Tylenol with cyanide? This true-crime series examines alarming theories behind the unsolved killings — and tracks down a key suspect.
Season 1 — 3 episodes

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

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.

Sealed for Your Protection
Decades after the murders, a victim's daughter searches for justice — and uncovers forgotten evidence that supports a controversial theory.
James Lewis
Self - Tylenol Murder Suspect
Michelle Rosen
Self - Daughter of Victim
Tyrone Fahner
Self - Illinois Attorney General
Mary Kellerman
Self - Tylenol Poisoning Victim
Richard Brzeczek
Self - Superintendent - Chicago Police