TV
Who really laced Tylenol with cyanide? This true-crime series examines alarming theories behind the unsolved killings — and tracks down a key suspect.
Last Episode Aired
2025-05-26
S1E3 — Sealed for Your Protection
Decades after the murders, a victim's daughter searches for justice — and uncovers forgotten evidence that supports a controversial theory.
Where to Watch
Stream
Netflix
Netflix Standard with Ads
Netflix
Netflix Standard with Ads
Availability data provided by JustWatch via TMDB
Billed 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
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