The Tylenol murders are among the nation’s most notorious unsolved crimes. This gripping P+ Original docuseries transports to 1982 amid the chaos and fear, and into the mind of the prime suspect. The killer laced several pills with cyanide across Chicago and watched from afar as seven people died, including a child.

Decades later, grieving families carry the horror of this heinous crime. Can cutting-edge DNA technology of today finally nail down the killer?

Stream the new docuseries on October 10, exclusively on Paramount+.