- Warner Baxter
- Colonel John Beetham
- Lois Moran
- Eve Mannering Durand
- Gilbert Emery
- Sir Frederick Bruce
- Claude King
- Sir George Mannering
- Philip Strange
- Eric Durand
- Boris Karloff
- Beetham's Manservant
- Jamiel Hasson
- Sahib Hana
- Peter Gawthorne
- British Police Inspector
- John Rogers
- Alf Pornick
- Edgar Norton
- Hilary Galt
- Frank Finch Smiles
- Galt's Clerk
- Mercedes De Valasco
- Nuna
- E.L. Park
- Police Insp. Charlie Chan
- Bess Flowers
- Lecture Audience
- Kathrin Clare Ward
- Eve's Landlady
- Florence Wix
- Lecture Attendee
