Cast

Brian Donlevy

Maj. Gen. Leslie R. Groves

Robert Walker

Col. Jeff Nixon

Tom Drake

Matt Cochran

Beverly Tyler

Anne Cochran

Hume Cronyn

Dr. J. Robert Oppenheimer

Audrey Totter

Jean O'Leary

Hurd Hatfield

Dr. John Wyatt

Joseph Calleia

Dr. Enrico Fermi

Godfrey Tearle

President Franklin D. Roosevelt

Victor Francen

Dr. Marre

Crew

Norman Taurog

Director (Directing)

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Frank Wead

Writer (Writing)

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Samuel Marx

Producer (Production)

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Bob Considine

Story (Writing)

Cedric Gibbons

Art Direction (Art)

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F. Keogh Gleason

Set Decoration (Art)

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Frank E. Myers

Assistant Director (Directing)

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Stanley Goldsmith

Assistant Director (Directing)

Edwin B. Willis

Set Decoration (Art)

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Daniele Amfitheatrof

Original Music Composer (Sound)