Cast
Scott Thomson
Chemist
Roland Hewgill
Army General
John Seitz
Ralph A. Bard
Lorne Brass
Klaus Fuchs
Dee McCafferty
William 'Deke' Parsons
Lawrence Dane
Ron Frazier
Colonel Pash
Hal Holbrook
Gen. George Marshall
John McMartin
Dr. Arthur Compton
Lia Sargent
Mrs. Wisnovsky
Isabelle Mejias
Mrs. Trowbridge
Jonathan Wise
Robert Serber
Arthur Holden
Scientist (uncredited)
Michael Tucker
Leo Szilard
Vlasta Vrana
Hans Bethe
Timothy Webber
Colonel Lansdale
Bernie McInerney
Olek Krupa
Edward Teller
Tony Shalhoub
Enrico Fermi
Gary Reineke
Groves's Commanding Officer
David Ferry
Army Major
Romano Orzari
Leo Szilard's Prime Scientist (uncredited)
休姆·克羅寧
James F. Byrnes
Richard Dysart
President Harry S. Truman
布萊思·丹尼希
Gen. Leslie Groves
Tom Butler
Captain DeSilva
大衛·史崔森
J. Robert Oppenheimer
Anne Twomey
Kitty Oppenheimer
Harry Standjofski
Robert Wilson
David Gow
Jack Wisnovsky
Patrick Breen
Richard Feynman
Barnard Hughes
Henry Stimson
Ron White
Colonel Nichols
Michael Sinelnikoff
Lord Rutherford
Ken Pogue
Dwight D. Eisenhower
Heinar Piller
Fleischmann
Michael J. Reynolds
Kenneth Bainbridge
David Ogden Stiers
Franklin D. Roosevelt
Alan Scarfe
George R. Robertson
Ed Condon