I repeat: who ISN’T in Christopher Nolan’s upcoming Oppenheimer film? Kenneth Branagh (Death on the Nile), David Krumholtz (The Deuce), and Alden Ehrenreich (Solo: A Star Wars Story) are the latest additions to the impressive cast list. They join Cillian Murphy, Emily Blunt, Matt Damon, Robert Downey Jr., Florence Pugh, Josh Hartnett, Dane DeHaan, and Rami Malek. Murphy will play J. Robert Oppenheimer, the scientist who played a vital role in the development of the atomic bomb. The film is based on the book American Prometheus: The Triumph and Tragedy of J. Robert Oppenheimer by Kai Bird and the late Martin J. Sherwin. Oppenheimer will open on July 21, 2023.