Nelson Eddy

Prince Peter Karagin, aka Peter Teranda

Ilona Massey

Lydia Marakova

Charles Ruggles

Nicki Popoff

Frank Morgan

Ivan Danchenoff

Lionel Atwill

Professor Marakov

C. Aubrey Smith

General Karagin

Joyce Compton

Masha

Dalies Frantz

Dimitri Marakov

Phillip Terry

Lieutenant Smirnoff

Walter Woolf King

Michael Sibirsky