The Beginning or the End

Brian Donlevy as Maj. Gen. Leslie R. Groves Robert Walker as Col. Jeff Nixon Beverly Tyler as Anne Cochran Hurd Hatfield as Dr. John Wyatt Victor Francen as Dr. Marre Richard Haydn as Dr. Chisholm 흄 크로닌 as Dr. J. Robert Oppenheimer Joseph Calleia as Dr. Enrico Fermi Henry O'Neill as Gen. Thomas F. Farrell Bobby Jordan as Radioman on Tinian Receiving A-Bomb Message Tom Drake as Matt Cochran Audrey Totter as Jean O'Leary Godfrey Tearle as President Franklin D. Roosevelt Jonathan Hale as Dr. Vannevar Bush John Litel as K.T. Keller Warner Anderson as Capt. William S. Parsons Ellen Ross as Waitress

Cedric Gibbons Art Direction Norman Taurog Director Edwin B. Willis Set Decoration