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

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' film is built around the theory that Charles Manson learned mind-control techniques from the CIA. But guess what? There's no evidence.