Theodore Hall
Self (archive footage)
J. Michael Wright
Ted Hall
Mickey O'Sullivan
FBI Agent McQueen
Kate Marie Smith
Susan Sax
Leslie Groves
Self (archive footage) (uncredited)
J. Robert Oppenheimer
Self (archive footage) (uncredited)
Joseph E. Davies
Self (archive footage) (uncredited)
Walter Huston
Self (archive footage) (uncredited)
Ann Harding
Self (archive footage) (uncredited)
Manart Kippen
Self (archive footage) (uncredited)
Harry S. Truman
Self (archive footage) (uncredited)
Dwight D. Eisenhower
Self (archive footage) (uncredited)
Henry L. Stimson
Self (archive footage) (uncredited)
Joseph Stalin
Self (archive footage) (uncredited)
Paul Tibbets
Self (archive footage) (uncredited)
Julius Rosenberg
Self (archive footage) (uncredited)
Ethel Rosenberg
Self (archive footage) (uncredited)
