
Hungarian physicist Leo Szilard leaves Europe, eventually arriving in the United States. With the help of Einstein, he persuades the government to build an atomic bomb. The project is given to no-nonsense Gen. Leslie Groves who selects physicist J. Robert Oppenheimer to head the Los Alamos Laboratory in New Mexico, where the bomb is built. As World War II draws to a close, Szilard has second thoughts about atomic weapons, and policy makers debate how and when to use the bomb.
Cast

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

Lawrence Dane
Unknown

Ron Frazier
Colonel Pash

Olek Krupa
Edward Teller

Bernie McInerney
Unknown
John Pielmeier
Seth

Ken Pogue
Dwight D. Eisenhower

Gary Reineke
Groves's Commanding Officer

Alan Scarfe
Unknown

John Seitz
Ralph A. Bard

Tony Shalhoub
Enrico Fermi
Ester Spitz
Trude Weiss

Ron White
Colonel Nichols
Stephan Balint
Eugen Wigner
Peter Boretski
Albert Einstein

Patrick Breen
Richard Feynman

Vlasta Vrana
Hans Bethe
George Popovich
Samuel Goudsmit

Lorne Brass
Klaus Fuchs

Michael Sinelnikoff
Lord Rutherford
Graham Haley
Haakon Chevalier

Kliment Denchev
Michael Polanyi
Diana Fajrajsl
Ilse Polanyi

Timothy Webber
Colonel Lansdale

Harry Standjofski
Robert Wilson

Lia Sargent
Mrs. Wisnovsky

David Gow
Jack Wisnovsky
Michael Farrell
Shapp

Isabelle Mejias
Mrs. Trowbridge

Jonathan Wise
Robert Serber

George R. Robertson
Ed Condon

Dee McCafferty
William 'Deke' Parsons

Tom Butler
Captain DeSilva
Robert Morelli
T. O. Jones
Jon Baggaley
James Tuck
David Bolt
Harry Gold

David Ferry
Army Major
Heinar Pillar
Fleischmann
François Klanfer
Haagen Kistiakowski
Joel Miller
George Kistiakowski

Michael J. Reynolds
Kenneth Bainbridge
Ed McGibbon
William D. Leahy
Nicholas Kilbertus
Paul Tibbets
Joe Cazalet
Air Force Guard

Scott Thomson
Chemist
Bob Clout
Alfred MacCormack

Roland Hewgill
Army General
Stan Gibbons
John J. McCloy
Terrence Labrosse
Allan Dulles
Delise Alison
London Pedestrian
Alex Guard
British Jr. Officer
Philip Spensley
British Sr. Officer
Frederick Neumann
Alexander Sachs
Norris Domingue
General Pa Watson
Steve Barry
Los Alamo Scientist (uncredited)

Arthur Holden
Scientist (uncredited)

Romano Orzari
Leo Szilard's Prime Scientist (uncredited)
Crew

Joseph Sargent
Director

David W. Rintels
Teleplay, Producer
Peter Wyden
Book
Debra Karen
Editor
Kees Van Oostrum
Director of Photography
Michael A. Williams
First Assistant Director
Sean Dwyer
Second Assistant Director
Sylvain Arseneault
Third Assistant Director
Normand Bourgie
Third Assistant Director

Aaron Spelling
Executive Producer
E. Duke Vincent
Executive Producer
Josette Perrotta
Associate Producer, Unit Production Manager
Curtis A. Schnell
Production Design
Renée April
Costume Design
Benjamin Robin
Hairstylist
Serge Morache
Assistant Hairstylist
Ronald J. Rolfe
Assistant Hairstylist

Jocelyne Bellemare
Makeup Department Head
Gillian Chandler
Key Makeup Artist

Mason Daring
Original Music Composer
Norman Henry
Production Manager
François Sylvestre
Unit Manager

Ken Gord
Executive In Charge Of Production
Guy Lalande
Art Direction
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