The director discussed the upcoming book on the Pure Cinema Podcast.
It’s not just me taking the screenplay and then breaking it down in a novelistic form.
I retold the story as a novel.

Brad Pitt in “Once Upon a Time in Hollywood.".Andrew Cooper/Columbia
But I did so much research.”
I’m trying to tell a novelistic version of these characters.
If the book existed first, then the movie would be me making a movie out of that material.

“Once Upon a Time in Hollywood: A Novel,” from Harper Perennial, will be available on June 29, 2021.Harper Perennial
You know how you take an unwieldy novel and make a run at turn it into a movie?
Well, to me, the movie is that.
This is the unwieldy version of the movie."
It goes back in time to tell you about Cliff at this point in time.
Once Upon a Time in Hollywood: A Novelwill beavailable on June 29.