The Beginning or the End

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

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