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

Was Charles Manson involved with the CIA's MKUltra program or any vast government conspiracy? Don't look here for answers.

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.