- Joseph Conradnovel "The Secret Agent"
- Charles Bennettscreen play
- Helen Simpsondialogue
- E.V.H. Emmettadditional dialogue
- Sylvia Sidney(as Sylvia Sydney)
Rest of cast listed alphabetically
- Pamela Bevan(uncredited)
- Peter Bull(uncredited)
- Clare Greet(uncredited)
- Mike Johnson(uncredited)
- J. Hubert Leslie(uncredited)
- Frederick Piper(uncredited)
- Fred Schwartz(uncredited)
- Torin Thatcher(uncredited)
- Jack Vyvyan(uncredited)
- Michael Balconproducer (uncredited)
- Ivor Montaguassociate producer (uncredited)
- Hubert Bathcomposer (uncredited)
- Jack Beavercomposer (uncredited)
- Louis Levycomposer (uncredited)
- Bernard Knowlescinematographer (photography)
- Oscar Friedrich Werndorffart director (as O. Werndorff)
- Albert Jullionart director (uncredited)
- Joe Strassnercostume designer (as J. Strassner) (dresses)
- Pen Tennysonassistant director (uncredited)
- Albert Whitlockscenic artist (uncredited)
- A. Cameronrecordist
- Stephen Dadecamera operator (uncredited)
- Louis Levymusical director
- Alma Revillecontinuity
- Walt Disneythanks: Cartoon sequence by arrangement with
Crew verified as complete
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