The Oppenheimer film was based on the book "American Prometheus"
The Oppenheimer film was based on the book "American Prometheus", but Christopher Nolan opted for a personal interpretation of the events. He delivered the script in first person to the actors, including Cillian Murphy, who plays Oppenheimer. Murphy, known for his role in "Peaky Blinders", preferred to remain isolated and focused on the role, while other actors enjoyed moments of relaxation behind the scenes.
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