Oppenheimer is a 2023 biographical thriller film directed by Christopher Nolan, starring Cillian Murphy as J. Robert Oppenheimer, the American theoretical physicist credited with being the “father of the atomic bomb” for his role in the Manhattan Project. The film is based on the 2005 biography “American Prometheus” by Kai Bird and Martin J. Sherwin. The story predominantly focuses on Oppenheimer’s studies, his direction of the Manhattan Project during World War II, and his eventual fall from grace due to his 1954 security hearing. The ensemble supporting cast includes Emily Blunt as Oppenheimer’s wife “Kitty”, Matt Damon as head of the Manhattan Project Leslie Groves, Robert Downey Jr. as United States Atomic Energy Commission member Lewis Strauss, and Florence Pugh as Oppenheimer’s communist lover Jean Tatlock.