출연진
브라이언 데너히
Gen. Leslie Groves
데이비드 스트러세언
J. Robert Oppenheimer
Michael Tucker
Leo Szilard
Hume Cronyn
James F. Byrnes
리차드 다이사트
President Harry S. Truman
Hal Holbrook
Gen. George Marshall
Barnard Hughes
Henry Stimson
John McMartin
Dr. Arthur Compton
David Ogden Stiers
Franklin D. Roosevelt
Anne Twomey
Kitty Oppenheimer
Lawrence Dane
Ron Frazier
Colonel Pash
Olek Krupa
Edward Teller
Bernie McInerney
John Pielmeier
Seth
Ken Pogue
Dwight D. Eisenhower
Gary Reineke
Groves's Commanding Officer
Alan Scarfe
John Seitz
Ralph A. Bard
토니 샬호브
Enrico Fermi
Ester Spitz
Trude Weiss