Self - Narrator (voice)
Campbell Scott
Chairman Gray (voice)
Boyd Gaines
Self
Martin J. Sherwin
Self (archive footage)
Joseph McCarthy
J. Robert Oppenheimer
David Strathairn
Herbert York
Marvin L. Goldberger
Priscilla McMillan
Robert Christy
Roy Glauber
Self (Archive Footage)
Harry S. Truman
Colonel Pash
Daniel Gerroll
J. Edgar Hoover
Lewis Strauss
Dwight D. Eisenhower
Eleanor Roosevelt
Edward Teller
Lyndon B. Johnson
Michael Stuhlbarg
The Stenographer
Ellen Katz
Michael Cumpsty
Harold Agnew
Jeremy Bernstein
Freeman Dyson
Richard Rhodes
Executive Producer
Mark Samels
Co-Producer
Dan Cogan
Editor
Kate Taverna
Producer
David Grubin
Director of Photography
James Callanan
Writer
Tania Castellanos
Charles Olivier
Deborah Peretz
Nick Fraser
Director