Christopher Nolan has revealed the reasoning behind his odd casting choice (Picture: Getty Images)

Oppenheimer director Christopher Nolan revealed that he threw his own daughter in a daring scene and saw her seriously injured onscreen while filming the highly anticipated film.

The famed filmmaker has revealed his film exploring the life of atomic bomb creator J Robert Oppenheimer, features a gruesome cameo from one of his relatives.

Explaining that his daughter Flora stepped in to take on the role of a girl whose face is damaged in an explosion that takes place in the mind of the main character, Christopher said the idea came to him when his wife and his offspring would visit him on set.

The creator’s wife and producer Emma Thomas and their daughter came to take a look around the film sets while the film was still being made.

Christopher told the Telegraph: “We needed someone to do this small part of a somewhat experimental and spontaneous sequence.

“So it was wonderful to have his kind of roll with that.”

The director cast his daughter in the new film (Picture: WireImage)
He asked his eldest daughter to appear in a gruesome scene (Picture: GC Images)

Acknowledging it was an odd casting choice for her own child to play such a grisly scene, the star admitted, “Really, I try not to analyze my own intentions.”

“But the fact is, if you create the ultimate destructive power, it will also destroy those near and dear to you.”

“I guess that was my way of putting that in what, to me, were the strongest terms possible.”

The long-awaited movie stars Cillian Murphy in the titular role and includes guest appearances from Emily Blunt, Matt Damon, Robert Downey Jr and Florence Pugh.

Cillian plays the main character in the film (Picture: AP)
The cast walked out of the premiere in support of the writers’ strike (Picture: WireImage)

Christopher’s comments came after the stars of the film staged a walkout premiering in London to ‘write their picket signs’ ahead of the announcement of the Sag-Aftra strike on Thursday night.

The premiere of Christopher’s historic epic was brought forward an hour before a Sag-Aftra press conference in Los Angeles, which later said the US union had agreed to strike.

The early announcement cast a shadow over the film’s London premiere at the Odeon Luxe in Leicester Square, with the film’s main stars departing ahead of the film’s screening.

Speaking on the red carpet, Cillian told PA: “I’m supporting my colleagues, that’s all I can tell you.”

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