Day One
Voltar
Brian DennehyGen. Leslie Groves
David StrathairnJ. Robert Oppenheimer
Michael TuckerLeo Szilard
Hume CronynJames F. Byrnes
Richard DysartPresident Harry S. Truman
Hal HolbrookGen. George Marshall
Barnard HughesHenry Stimson
John McMartinDr. Arthur Compton
David Ogden StiersFranklin D. Roosevelt
Anne TwomeyKitty Oppenheimer
Lawrence Dane
Ron FrazierColonel Pash
Olek KrupaEdward Teller
Bernie McInerney- John PielmeierSeth
Ken PogueDwight D. Eisenhower
Gary ReinekeGroves's Commanding Officer
Alan Scarfe
John SeitzRalph A. Bard
Tony ShalhoubEnrico Fermi- Ester SpitzTrude Weiss
Ron WhiteColonel Nichols- Stephan BalintEugen Wigner
- Peter BoretskiAlbert Einstein
Patrick BreenRichard Feynman
Vlasta VranaHans Bethe- George PopovichSamuel Goudsmit
Lorne BrassKlaus Fuchs
Michael SinelnikoffLord Rutherford- Graham HaleyHaakon Chevalier
Kliment DenchevMichael Polanyi- Diana FajrajslIlse Polanyi
Timothy WebberColonel Lansdale
Harry StrandjofskiRobert Wilson
Lia SargentMrs. Wisnovsky
David GowJack Wisnovsky- Michael FarrellShapp
- Isabelle MejiasMrs. Trowbridge
Jonathan WiseRobert Serber
George R. RobertsonEd Condon
Dee McCaffertyWilliam 'Deke' Parsons
Tom ButlerCaptain DeSilva- Robert MorelliT. O. Jones
- Jon BaggaleyJames Tuck
- David BoltHarry Gold
David FerryArmy Major- Heinar PillarFleischmann
- François KlanferHaagen Kistiakowski
- Joel MillerGeorge Kistiakowski
Michael J. ReynoldsKenneth Bainbridge- Ed McGibbonWilliam D. Leahy
- Nicholas KilbertusPaul Tibbets
- Joe CazaletAir Force Guard
Scott ThomsonChemist- Bob CloutAlfred MacCormack
Roland HewgillArmy General- Stan GibbonsJohn J. McCloy
- Terrence LabrosseAllan Dulles
- Delise AlisonLondon Pedestrian
- Alex GuardBritish Jr. Officer
- Philip SpensleyBritish Sr. Officer
- Frederick NeumannAlexander Sachs
- Norris DomingueGeneral Pa Watson
- Steve BarryLos Alamo Scientist (sem créditos)
Arthur HoldenScientist (sem créditos)
Romano OrzariLeo Szilard's Prime Scientist (sem créditos)