Nelson Eddy
Role: Prince Peter Karagin, aka Peter Teranda
Ilona Massey
Role: Lydia Marakova
Charles Ruggles
Role: Nicki Popoff
Frank Morgan
Role: Ivan Danchenoff
Lionel Atwill
Role: Professor Marakov
C. Aubrey Smith
Role: General Karagin
Dalies Frantz
Role: Dimitri Marakov
Phillip Terry
Role: Lieutenant Smirnoff
Walter Woolf King
Role: Michael Sibirsky
Frederick Worlock
Role: Ramensky
Abner Biberman
Role: Leo Proplinski
Arthur W. Cernitz
Role: Sergei Pavloff
Roland Varno
Role: Lieutenant Nikitin
George Tobias
Role: Slaski
Willy Castello
Role: Capt. Testoff
Paul Irving
Role: Prince Morodin
Mildred Shay
Role: Jeanette Sibirsky
Alma Kruger
Role: Mrs. Danchenoff
Zeffie Tilbury
Role: Natalya Petrovna
Demetrius Alexis
Role: (uncredited)
Dorothy Ates
Role: Cafe Girl (uncredited)
Douglas Beattie
Role: Baritone (uncredited)
John Bleifer
Role: (uncredited)
Charles Brokaw
Role: Soldier (uncredited)
Rand Brooks
Role: Crying Soldier (uncredited)
Maurice Cass
Role: (uncredited)
Feodor Chaliapin Jr.
Role: Soldier (uncredited)
Irene Coleman
Role: Cafe Girl (uncredited)
Alexis Davidoff
Role: (uncredited)
Dick Dennis
Role: Singer (uncredited)
Al Ferguson
Role: Singer (uncredited)
Jack George
Role: Violinist (uncredited)
Boris Glagolin
Role: (uncredited)
John Gubbins
Role: (uncredited)
Eddie Hart
Role: (uncredited)
John Holland
Role: (uncredited)
Charles Judels
Role: Batoff (uncredited)
Ilia Khmara
Role: (uncredited)
Harry Lamont
Role: (uncredited)
David Laughlin
Role: (uncredited)
Jack Luden
Role: (uncredited)
Michael Mark
Role: (uncredited)
Art Miles
Role: (uncredited)
Paul Newlan
Role: Policeman
Sigurd Nilssen
Role: Sultan (uncredited)
Ed Payson
Role: (uncredited)
Irra Petina
Role: (uncredited)
Lee Phelps
Role: Doorman (uncredited)
Rex Post
Role: (uncredited)
Frank Puglia
Role: Ivan (uncredited)
Constantine Romanoff
Role: (uncredited)
William Royle
Role: (uncredited)
Hector V. Sarno
Role: (uncredited)
Earl Seaman
Role: Soldier (uncredited)
Harry Semels
Role: (uncredited)
Marla Shelton
Role: (uncredited)
Florence Shirley
Role: Lily Allison (uncredited)
Robert R. Stephenson
Role: (uncredited)
Kay Sutton
Role: Girl (uncredited)
Dirk Thane
Role: (uncredited)
Andrew Tombes
Role: Wilbur Allison (uncredited)
Monte Vandergrift
Role: Corporal (uncredited)
Ellinor Vanderveer
Role: (uncredited)
Ernö Verebes
Role: Danchenoff's Secretary (uncredited)
George Volk
Role: Soldier (uncredited)
Marjorie Woodworth
Role: Russian Girl (uncredited)
Harry Worth
Role: (uncredited)