Elenco - Day One
Brian Dennehy
Gen. Leslie Groves
David Strathairn
J. Robert Oppenheimer
Michael Tucker
Leo Szilard
Hume Cronyn
James F. Byrnes
Richard Dysart
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
Ron Frazier
Colonel Pash
Olek Krupa
Edward Teller
John Pielmeier
Seth
Ken Pogue
Dwight D. Eisenhower
Gary Reineke
Groves's Commanding Officer
John Seitz
Ralph A. Bard
Tony Shalhoub
Enrico FermiEster Spitz
Trude Weiss
Ron White
Colonel NicholsStephan Balint
Eugen WignerPeter Boretski
Albert Einstein
Patrick Breen
Richard Feynman
Vlasta Vrana
Hans BetheGeorge Popovich
Samuel Goudsmit
Lorne Brass
Klaus Fuchs
Michael Sinelnikoff
Lord RutherfordGraham Haley
Haakon ChevalierKliment Denchev
Michael PolanyiDiana Fajrajsl
Ilse Polanyi
Timothy Webber
Colonel Lansdale
Harry Strandjofski
Robert Wilson
Lia Sargent
Mrs. Wisnovsky
David Gow
Jack Wisnovsky