Dr. Boris Karlov
Warner Oland
Kitty Conover
June Collyer
Prince Nicholas Petroff
Lloyd Hughes
Aunt Abbie
Clara Blandick
Martin Kent
Hale Hamilton
Prince Gregor Petroff
Wallace MacDonald
General Petroff
George Fawcett
Anya Karlov
Florence Lake
Peter
Mischa Auer
Prince Ivan Petroff
Ernest Hilliard
Director
George B. Seitz
Dialogue
Florence Ryerson
Continuity
Sound
Corson Jowett
Producer
Phil Goldstone
Story
Harold McGrath
Art Direction
Fay Babcock
Settings
Ralph M. DeLacy
Editor
Otto Ludwig
Director of Photography
Arthur Reed