American Playhouse

Sam Waterston

Robert Oppenheimer

Edward Herrmann

The Headmaster

John Carson

Narrator (voice)

David Suchet

Edward Teller

Jana Shelden

Kitty Oppenheimer

Edward Hardwicke

Enrico Fermi

Christopher Muncke

Colonel Kenneth Nichols

Sada Thompson

Mrs. Antrobus

Hallie Foote

Elizabeth Vaughn

Jeffrey DeMunn

George Pierce Baker

Paul Guilfoyle

Peter Whitman

Robert Serber

Manning Redwood

General Leslie Groves

Matthew Guinness

Hans Bethe

Elizabeth Franz

Doctor

Barton Heyman

Hank Kahler

Frederic Forrest

Pap Finn

Josh Hamilton

Lovely Mead

Robert Joy

Julian Hyde

Tom Aldredge

The Narrator / The Mysterious Man