"A Russian prince disguised as a worker and a cafe singer secretly involved in revolutionary activities fall in love."
Nelson Eddy
as Prince Peter Karagin, aka Peter Teranda
Ilona Massey
as Lydia Marakova
Charles Ruggles
as Nicki Popoff
Frank Morgan
as Ivan Danchenoff
Lionel Atwill
as Professor Marakov
C. Aubrey Smith
as General Karagin
Joyce Compton
as Masha
Dalies Frantz
as Dimitri Marakov
Phillip Terry
as Lieutenant Smirnoff
Walter Woolf King
as Michael Sibirsky
Frederick Worlock
as Ramensky
Abner Biberman
as Leo Proplinski
Arthur W. Cernitz
as Sergei Pavloff
Roland Varno
as Lieutenant Nikitin
George Tobias
as Slaski
Paul Sutton
as Anton
Willy Castello
as Capt. Testoff
Paul Irving
as Prince Morodin
Mildred Shay
as Jeanette Sibirsky
Alma Kruger
as Mrs. Danchenoff
Zeffie Tilbury
as Natalya Petrovna
Demetrius Alexis
as (uncredited)
Dorothy Ates
as Cafe Girl (uncredited)
Douglas Beattie
as Baritone (uncredited)
John Bleifer
Charles Brokaw
as Soldier (uncredited)
Rand Brooks
as Crying Soldier (uncredited)
Maurice Cass
Feodor Chaliapin Jr.
Irene Coleman
Alexis Davidoff
Dick Dennis
as Singer (uncredited)
Al Ferguson
Jack George
as Violinist (uncredited)
Boris Glagolin
John Gubbins
Eddie Hart
John Holland
Charles Judels
as Batoff (uncredited)
Ilia Khmara
Harry Lamont
David Laughlin
Jack Luden
Michael Mark
Art Miles
Paul Newlan
as Policeman
Sigurd Nilssen
as Sultan (uncredited)
Ed Payson
Irra Petina
Lee Phelps
as Doorman (uncredited)
Rex Post
Frank Puglia
as Ivan (uncredited)
Constantine Romanoff
William Royle
Hector V. Sarno
Earl Seaman
Harry Semels
Marla Shelton
Florence Shirley
as Lily Allison (uncredited)
Robert R. Stephenson
Kay Sutton
as Girl (uncredited)
Dirk Thane
Andrew Tombes
as Wilbur Allison (uncredited)
Monte Vandergrift
as Corporal (uncredited)
Ellinor Vanderveer
Ernö Verebes
as Danchenoff's Secretary (uncredited)
George Volk
Marjorie Woodworth
as Russian Girl (uncredited)
Harry Worth
Reinhold Schünzel
Director
Adrian
Costume Design
Herbert Stothart
Original Music Composer
Karl Freund
Director of Photography
Joseph Ruttenberg
George Boemler
Editor
Cedric Gibbons
Art Direction
Lawrence Weingarten
Producer
Edwin B. Willis
Set Decoration
Eric Maschwitz
Theatre Play
Leon Gordon
Screenplay
Charles Bennett
Jacques Deval
