By James White | Posted 20 May 2019

Quentin Tarantino's Once Upon A Time In Hollywood is about to face its first big, public test, screening for film fans and critics at the Cannes Film Festival. And ahead of the arrival, the director has torn a page from the Russo Brothers' Avengers: Endgame book and penned a letter asking audiences not to spoil anything.

"The cast and crew have worked so hard to create something original, and I only ask that everyone avoids revealing anything that would prevent later audiences from experiencing the film in the same way," Tarantino writes in a physical note that was then posted to the film's Twitter account.

QT has, of course, faced issues with leaks and early revelations before – a draft of The Hateful Eight made it out into the world a few years ago, and it nearly led him to ditch making the movie itself.

Once Upon A Time In Hollywood finds a film industry in flux. It's 1969 and TV star Rick Dalton (Leonardo DiCaprio) and his longtime stunt double Cliff Booth (Brad Pitt) make their way around an industry they hardly recognise anymore. As Hollywood's golden age comes to an end, the streets of the City of Angels are filled with fear as the Manson cult's murder spree strikes.

Margot Robbie, Timothy Olyphant, Luke Perry (in his final role), Damian Lewis, Dakota Fanning and Al Pacino are among the cast, and the film will be out in the UK on 14 August, so you'll have to avoid spoilers until then. Expect strict security measures installed at the premiere and other screenings to make sure that Tom Holland absolutely, positively doesn't get in the room.

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