

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, Ari Pines
Netflix
Jeff Flock
Self - Reporter, CNN
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
Gardiner Harris
Self - Author, No More Tears: The Dark Secrets of Johnson & Johnson

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

2. 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.

3. Sealed for Your Protection
Decades after the murders, a victim's daughter searches for justice — and uncovers forgotten evidence that supports a controversial theory.