| Person | Type | Job | Role(s) |
|---|---|---|---|
 David Webb Peoples | Crew | Editing | Editor, Writer |
 Janet Peoples | Crew | Writing | Writer |
 Jon Else | Crew | Directing | Director, Producer, Writer |
Martin Bresnick | Crew | Sound | Music |
Ralph Wikke | Crew | Editing | Editor |
 Stephen Lighthill | Crew | Camera | Camera Operator |
Tom McDonough | Crew | Camera | Camera Operator |
Michael Chin | Crew | Camera | Assistant Camera |
Peter Schnall | Crew | Camera | Assistant Camera |
Courtney Flavin | Crew | Production | Associate Producer |
Morning Slayter | Crew | Sound | Sound |
Samantha Heilwell | Crew | Sound | Sound |
Luther Greene | Crew | Sound | Sound Re-Recording Mixer |
Steve Longstreth | Crew | Sound | Sound |
Kathryn Witte | Crew | Production | Associate Producer |
Martha Olson | Crew | Production | Associate Producer |
Will Harvey | Crew | Sound | Sound Re-Recording Mixer |
 Freeman Dyson | Cast | Actor | Self |
 Hans Bethe | Cast | Actor | Self |
 Harry S. Truman | Cast | Actor | Self (archive footage) |
 J. Robert Oppenheimer | Cast | Actor | Self (archive footage) |
Jon Else | Cast | Actor | Interviewer |
 Joseph McCarthy | Cast | Actor | Self (archive footage) |
 Leslie Groves | Cast | Actor | Self (archive footage) |
 Paul Frees | Cast | Actor | Self - Narrator (voice) |
 Robert Serber | Cast | Actor | Self |
 Haakon Chevalier | Cast | Actor | Self |
 Isidor Isaac Rabi | Cast | Actor | Self |
 Frank Oppenheimer | Cast | Actor | Self |
Robert Porton | Cast | Actor | Self |
Stanislaw Ulam | Cast | Actor | Self |
Francis Fergusson | Cast | Actor | Self |
Robert R. Wilson | Cast | Actor | Self |
Dave MacDonald | Cast | Actor | Self |
Robert Krohn | Cast | Actor | Self |
Dorothy McKibben | Cast | Actress | Self |
Elizabeth Ingram | Cast | Actress | Self |
Susan Evans | Cast | Actress | Self |
Francoise Ulam | Cast | Actress | Self |
Holm Bursom | Cast | Actor | Self |
Jane Wilson | Cast | Actress | Self |
Stirling Colgate | Cast | Actor | Self |
| Person | Type | Job | Role(s) |
