Elenco - O Início do Fim
Paul Newman
Gen. Leslie R. Groves
Dwight Schultz
J. Robert Oppenheimer
Bonnie Bedelia
Kitty Oppenheimer
John Cusack
Michael Merriman
Laura Dern
Kathleen Robinson
Ron Frazier
Peter de Silva
John C. McGinley
Richard Schoenfield
Natasha Richardson
Jean Tatlock
Ron Vawter
Jamie Latrobe
Michael Brockman
William "Deke" Parsons
Del Close
Dr. Kenneth Whiteside
John Considine
Robert Tuckson
Allan Corduner
Franz GoetheJoe D'Angerio
Seth Neddermeyer
Jon DeVries
Johnny Mount
James Eckhouse
Robert Harper
Todd Field
Robert Wilson
Mary Pat Gleason
Dora Welsh
Clark Gregg
Douglas Panton
Péter Halász
George KistiakowskyGerald Hiken
Leo Szilard
Arthur Holden
Oakridge Doctor
Ed Lauter
Whitney AshbridgeDonald MacKechnie
James Tuck
Madison Mason
Boris Pash
Krzysztof Pieczyński
Otto FrischDon Pugsley
Bronston
Logan Ramsey
Brehon Somervell
Fred Thompson
Melrose Hayden Barry
Jim True-Frost
Donald HornigBarry Yourgrau
Edward TellerMarek Alboszta
ScientistSteven Baigelman
Dr. AvenellFrank Benettieri Jr.
MessengerRoger Cubicciotti
Frank OppenheimerFranco Cutietta
Enrico Fermi