The Manson Murders' speculates that Charles Manson was linked to the CIA's MKUltra operation. Find out what it was and why it was so controversial

The movie is credited as an adaptation of Tom O’Neill’s book Chaos: Charles Manson, the CIA, and the Secret History of the Sixties, a sprawling, occasionally off-the-rails investigation that eventually ties Manson to the U.

Errol Morris' new documentary pulls from Tom O'Neill's 2019 book, which disputes much of what we know about the Manson Family.