Cast & Crew
- Richard TauberMario Carlini
-
Jimmy DuranteJonah J. Whistler - Diana NapierPrincess-Regent Maria Renata
- June ClydeSadie Whistler
- Derrick de MarneyRudolpho Strozzi
- George HayesPolice Colonel Strozzi
- Esme PercyAustrian Ambassador
- John HepworthPedro
- Edward RigbyThe Maestro
- Walter FordeDirector
- Max SchachProducer
- Rudolph BernauerWriter
- Ernest BettsWriter
- Eric MaschwitzWriter