![Day One](https://image.tmdb.org/t/p/w200//jZjSC97uUl4H4evqRXJTtWRKHVI.jpg)
Day One
2 hours 21 minutes1989-05-12
6.5
Watch Trailer
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](https://image.tmdb.org/t/p/w200//cg7CwS1vMJXCzZ0FUm4RbrjAJ2t.jpg)
Brian Dennehy
Gen. Leslie Groves
![David Strathairn](https://image.tmdb.org/t/p/w200//fhkvTcrCDPTAclTnE7sqQS1NZKq.jpg)
David Strathairn
J. Robert Oppenheimer
![Michael Tucker](https://image.tmdb.org/t/p/w200//ewcHHv9SKFcE8GBcs6kqiZIDHjw.jpg)
Michael Tucker
Leo Szilard
![Hume Cronyn](https://image.tmdb.org/t/p/w200//2Tdh3cbagprrV0wN6q96u8wTTNJ.jpg)
Hume Cronyn
James F. Byrnes
![Richard Dysart](https://image.tmdb.org/t/p/w200//yQOaZexN3YbqGWOguu2VrjsvX2G.jpg)
Richard Dysart
President Harry S. Truman
![Hal Holbrook](https://image.tmdb.org/t/p/w200//mZw1GUv6B5yvKfy62imbuemxG6p.jpg)
Hal Holbrook
Gen. George Marshall
![Barnard Hughes](https://image.tmdb.org/t/p/w200//1QwqpJ37wE5cjrDxHoTWfZk4oVs.jpg)
Barnard Hughes
Henry Stimson
![John McMartin](https://image.tmdb.org/t/p/w200//Ki2qitrCeMGzuUoq1yzTJkbUZg.jpg)
John McMartin
Dr. Arthur Compton
![David Ogden Stiers](https://image.tmdb.org/t/p/w200//zWsI9z52gC3EN39Zith8fo1yxxA.jpg)
David Ogden Stiers
Franklin D. Roosevelt
![Anne Twomey](https://image.tmdb.org/t/p/w200//wevkf8lFam2ADjZlN4ySe13t3jO.jpg)
Anne Twomey
Kitty Oppenheimer
![Lawrence Dane](https://image.tmdb.org/t/p/w200//u67sYvj2kblUIbWxG88pGP7gdyY.jpg)
Lawrence Dane
![Ron Frazier](/_next/static/media/notFound.aecd17f8.png)
Ron Frazier
Colonel Pash
![Olek Krupa](https://image.tmdb.org/t/p/w200//jTVCCZCm16aZeUCXnoSd4EldfyN.jpg)
Olek Krupa
Edward Teller
![Bernie McInerney](https://image.tmdb.org/t/p/w200//q8clbGAiRLiFLjoeotLlg0KZyAB.jpg)
Bernie McInerney
![John Pielmeier](/_next/static/media/notFound.aecd17f8.png)
John Pielmeier
Seth
![Ken Pogue](https://image.tmdb.org/t/p/w200//gxDVKODaGCzt3wRebo6aMBTwdyk.jpg)
Ken Pogue
Dwight D. Eisenhower
![Gary Reineke](https://image.tmdb.org/t/p/w200//8vGRMFAjjABNU9PGtmOy1CBOXq.jpg)
Gary Reineke
Groves's Commanding Officer
![Alan Scarfe](https://image.tmdb.org/t/p/w200//cGFiiIK3rqo1nakzaAzAqEhzgbs.jpg)
Alan Scarfe
![John Seitz](https://image.tmdb.org/t/p/w200//5mY1YFezwwQAdfbnS8UUCO8lo4F.jpg)
John Seitz
Ralph A. Bard
![Tony Shalhoub](https://image.tmdb.org/t/p/w200//1zfBSuAmOr1xXjNg4WzFWPm5B0Z.jpg)
Tony Shalhoub
Enrico Fermi
![Ester Spitz](/_next/static/media/notFound.aecd17f8.png)
Ester Spitz
Trude Weiss
![Ron White](https://image.tmdb.org/t/p/w200//rxM6b0zqJE2eb913zm8RSqSxKX2.jpg)
Ron White
Colonel Nichols
![Stephan Balint](/_next/static/media/notFound.aecd17f8.png)
Stephan Balint
Eugen Wigner
![Peter Boretski](/_next/static/media/notFound.aecd17f8.png)
Peter Boretski
Albert Einstein
![Patrick Breen](https://image.tmdb.org/t/p/w200//oGK78qN4cezMlG7VBvZ0QYh1Ui0.jpg)
Patrick Breen
Richard Feynman
![Vlasta Vrana](https://image.tmdb.org/t/p/w200//z5ujCvCkNv7ikka6tJVaxqegldY.jpg)
Vlasta Vrana
Hans Bethe
![George Popovich](/_next/static/media/notFound.aecd17f8.png)
George Popovich
Samuel Goudsmit
![Lorne Brass](https://image.tmdb.org/t/p/w200//rW5Z2bZzOGAfRlfnsvtKcWKEuHK.jpg)
Lorne Brass
Klaus Fuchs
![Michael Sinelnikoff](https://image.tmdb.org/t/p/w200//uY2vabps2KlAyRutRtGyxk0SOqy.jpg)
Michael Sinelnikoff
Lord Rutherford
![Graham Haley](/_next/static/media/notFound.aecd17f8.png)
Graham Haley
Haakon Chevalier
![Kliment Denchev](/_next/static/media/notFound.aecd17f8.png)
Kliment Denchev
Michael Polanyi
![Diana Fajrajsl](/_next/static/media/notFound.aecd17f8.png)
Diana Fajrajsl
Ilse Polanyi
![Timothy Webber](https://image.tmdb.org/t/p/w200//Av0mtgZ9DeopXP9NQjzd8q9ZPd6.jpg)
Timothy Webber
Colonel Lansdale
![Harry Strandjofski](https://image.tmdb.org/t/p/w200//iotIZoLu8sk2nvhyY3mytFvPkgf.jpg)
Harry Strandjofski
Robert Wilson
![Lia Sargent](https://image.tmdb.org/t/p/w200//4a9RUNfXnxk3uQDvbooeLD6nh9r.jpg)
Lia Sargent
Mrs. Wisnovsky
![David Gow](https://image.tmdb.org/t/p/w200//cMdiKtyIgixRaDMSlGWmiy3TOxU.jpg)
David Gow
Jack Wisnovsky
![Michael Farrell](/_next/static/media/notFound.aecd17f8.png)
Michael Farrell
Shapp
![Isabelle Mejias](/_next/static/media/notFound.aecd17f8.png)
Isabelle Mejias
Mrs. Trowbridge
![Jonathan Wise](https://image.tmdb.org/t/p/w200//gVDKn3VlaTGEQXfUZjrBJcLMDef.jpg)
Jonathan Wise
Robert Serber
![George R. Robertson](https://image.tmdb.org/t/p/w200//by72qET7xsXONeJpuFkPCi4RBbg.jpg)
George R. Robertson
Ed Condon
![Dee McCafferty](https://image.tmdb.org/t/p/w200//luNGnB8AkS6WXdTDcwu80mHsatg.jpg)
Dee McCafferty
William 'Deke' Parsons
![Tom Butler](https://image.tmdb.org/t/p/w200//sMDuFSvna90gGV0jkOK7PDzQC8g.jpg)
Tom Butler
Captain DeSilva
![Robert Morelli](/_next/static/media/notFound.aecd17f8.png)
Robert Morelli
T. O. Jones
![Jon Baggaley](/_next/static/media/notFound.aecd17f8.png)
Jon Baggaley
James Tuck
![David Bolt](/_next/static/media/notFound.aecd17f8.png)
David Bolt
Harry Gold
![David Ferry](https://image.tmdb.org/t/p/w200//vSp7x6OqIfAktTmFp7xNgox7OGb.jpg)
David Ferry
Army Major
![Heinar Pillar](/_next/static/media/notFound.aecd17f8.png)
Heinar Pillar
Fleischmann
![François Klanfer](/_next/static/media/notFound.aecd17f8.png)
François Klanfer
Haagen Kistiakowski
![Joel Miller](/_next/static/media/notFound.aecd17f8.png)
Joel Miller
George Kistiakowski
![Michael J. Reynolds](https://image.tmdb.org/t/p/w200//4fjOXTU96Hlv2gHNqlXt19SJaPW.jpg)
Michael J. Reynolds
Kenneth Bainbridge
![Ed McGibbon](/_next/static/media/notFound.aecd17f8.png)
Ed McGibbon
William D. Leahy
![Nicholas Kilbertus](/_next/static/media/notFound.aecd17f8.png)
Nicholas Kilbertus
Paul Tibbets
![Joe Cazalet](/_next/static/media/notFound.aecd17f8.png)
Joe Cazalet
Air Force Guard
![Scott Thomson](https://image.tmdb.org/t/p/w200//AaK5GQEqwcDKHyXnHnCla7PqVUu.jpg)
Scott Thomson
Chemist
![Bob Clout](/_next/static/media/notFound.aecd17f8.png)
Bob Clout
Alfred MacCormack
![Roland Hewgill](/_next/static/media/notFound.aecd17f8.png)
Roland Hewgill
Army General
![Stan Gibbons](/_next/static/media/notFound.aecd17f8.png)
Stan Gibbons
John J. McCloy
![Terrence Labrosse](/_next/static/media/notFound.aecd17f8.png)
Terrence Labrosse
Allan Dulles
![Delise Alison](/_next/static/media/notFound.aecd17f8.png)
Delise Alison
London Pedestrian
![Alex Guard](/_next/static/media/notFound.aecd17f8.png)
Alex Guard
British Jr. Officer
![Philip Spensley](/_next/static/media/notFound.aecd17f8.png)
Philip Spensley
British Sr. Officer
![Frederick Neumann](/_next/static/media/notFound.aecd17f8.png)
Frederick Neumann
Alexander Sachs
![Norris Domingue](/_next/static/media/notFound.aecd17f8.png)
Norris Domingue
General Pa Watson
![Steve Barry](/_next/static/media/notFound.aecd17f8.png)
Steve Barry
Los Alamo Scientist (uncredited)
![Arthur Holden](https://image.tmdb.org/t/p/w200//c8FXyHhiVXCsjvwxXOzuVi28z3i.jpg)
Arthur Holden
Scientist (uncredited)
![Romano Orzari](https://image.tmdb.org/t/p/w200//uXgDFJLWXIehw4Ea304QClle2Ai.jpg)