- Garnett Westonscreen play by
- Herman C. McNeilenovel "Challenge" (as H.C. 'Sapper' McNeile)
Rest of cast listed alphabetically
- Leonard Carey(uncredited)
- Jean De Briac(uncredited)
- Rudolf Myzet(uncredited)
- Paul Porcasi(uncredited)
- Gerald Rogers(uncredited)
- Konstantin Shayne(uncredited)
- Evan Thomas(uncredited)
- Michael Vallon(uncredited)
- Harold Hurleyproducer (uncredited)
- Edward T. Lowe Jr.producer (uncredited)
- Milan Rodercomposer (uncredited)
- William C. Mellorcinematographer (photographed by)
- A. Earl Hedrickart director (as Earl Hedrick)
- Mel Epsteinassistant director (uncredited)
- A.E. Freudemaninterior decorator
- George Duttonsound recordist
- Boris Morrosmusical director
- Phil Bouteljecomposer: stock music (uncredited)
- Gerard Carbonaracomposer: stock music (uncredited)
- Karl Hajoscomposer: stock music (uncredited)
- Rudolph G. Koppcomposer: stock music (uncredited)
- John Leipoldcomposer: stock music (uncredited)
- Heinz Roemheldcomposer: stock music (uncredited)
Crew believed to be complete
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