Assigned to oversee the development of the atomic bomb, Gen. Leslie Groves is a stern military man determined to have the project go according to plan. He selects J. Robert Oppenheimer as the key scientist on the top-secret operation, but the two men clash fiercely on a number of issues. Despite their frequent conflicts, Groves and Oppenheimer ultimately push ahead with two bomb designs — the bigger "Fat Man" and the more streamlined "Little Boy."
Gen. Leslie R. Groves
J. Robert Oppenheimer
Kitty Oppenheimer
Michael Merriman
Kathleen Robinson
Peter de Silva
Richard Schoenfield
Jean Tatlock
Jamie Latrobe
Dr. Kenneth Whiteside
Robert Tuckson
Franz Goethe
Johnny Mount
Robert Harper
Robert Wilson
Dora Welsh
Douglas Panton
George Kistiakowsky
Oakridge Doctor
Whitney Ashbridge
Boris Pash
Otto Frisch
Bronston
Brehon Somervell
Melrose Hayden Barry
Donald Hornig
Dr. Louis Hempelman
Observation Officer
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