Oppenheimer Directed by Christopher Nolan Screenplay by Christopher Nolan Based on American Prometheus by Kai Bird & Martin J. Sherwin Produced by Emma Thomas, Charles Roven & Christopher Nolan Cast Cillian Murphy as J. Robert Oppenheimer, a theoretical physicist and director of the Los Alamos National Laboratory. Emily Blunt as Katherine “Kitty” Oppenheimer, Robert Oppenheimer’s …