Who really laced Tylenol with cyanide? This true-crime series examines alarming theories behind the unsolved killings — and tracks down a key suspect.
Created By
Joe Berlinger
1 Season • 3 Episodes Total
3 Episodes • Aired May 2025
Episodes
3
First Aired
May 2025
2024
2023
2021
2018
1984
2012
2025
2020
2015
2016
2008
2013
2006
2022
1994
