Every season of Unmasking a Killer ever, ranked from best to worst by thousands of votes from fans of the show. The best seasons of Unmasking a Killer!

Launching the Manhunt for The Golden State Killer

The Pattern of a Killer

How the Killer Got Away

Inside the Killer’s Mind

Is the Killer Still Out There?

Closing in on The Golden State Killer: Part 1

Closing in on The Golden State Killer:  Part 2

Viewers go inside the investigation, the case files and the mind of The Golden State Killer – a man believed to be the most prolific uncaught rapist and serial killer in the nation. With exclusive cooperation from law enforcement and survivors, the docuseries examines the historical and social ramifications of The Golden State Killer’s reign of terror, explore the advances in forensic technology, and highlight the legal changes to our justice system that his crime spree spurred.

The Best Seasons of Unmasking a Killer

Season 1