Even if you think you can't spoil history, make sure you see the film first.
ET takes a closer look at the key people involved and the events leading up to Aug. 8-9.
From Sharon Tate to Steve McQueen, and Charles Manson to Squeaky Fromme.
'Once Upon a Time in Hollywood' and 'Mindhunter' season two aren't the only ones to take on this tragedy.
