Reparto y equipo
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Nelson EddyPeter - Ilona MasseyLydia
- Charles RugglesNicki
- Frank MorganDanchenoff
- Lionel AtwillMarakov
- Aubrey SmithGeneral Karagin
- Joyce ComptonMasha
- Dalies Erhardt FrantzDimitri
- Walter Woolf KingCapt. Michael Sibirsky
- Phillip TerryLt. Smirnoff
- Frederick WorlockRamensky
- Abner BibermanLeo Proplinski
- Arthur W. CernitzCapt. Sergei Pavloff
- Roland VarnoLt. Nikitin
- George TobiasSlaski
- Paul SuttonAnton
- Willy CastelloCapt. Testoff
- Paul IrvingPrince Morodin
- Mildred ShayJeanette Sibirsky
- Alma KrugerMrs. Danchenoff
- Zeffie TilburyPrincess Natalya Petrovna
- Reinhold SchünzelDirección
- Lawrence WeingartenProducción
- Leon GordonEscritor
- Charles BennettEscritor
- Jacques DevalEscritor