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

S1 E3 • 5/26/2025
Decades after the murders, a victim's daughter searches for justice — and uncovers forgotten evidence that supports a controversial theory.
Featured Cast
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