Patric Knowles as Dr. Paul Dupin

Maria Montez as Marie Roget

Maria Ouspenskaya as Madame Cecile Roget

John Litel as Henri Beauvais

Edward Norris as Marcel Vigneaux

Lloyd Corrigan as Gobelin

Frank Reicher as Magistrate

Nell O'Day as Camille Roget

Clyde Fillmore as Mons. De Luc

Paul E. Burns as Gardner

Norma Drury as Madame De Luc

Charles Middleton as Curator

William Ruhl as Detective

Reed Hadley as Naval Officer

Paul Dubov as News vendor

John Maxwell as Detective

Paul Bryar as Detective

Raymond Bailey as Gendarme

Charles Wagenheim as Subordinate

Lester Dorr as Subordinate

Alphonse Martell as Vegetable cart driver

Francis Sayles as Parisian

Jimmie Lucas as Parisian

Frank O'Connor as

Caroline Frances Cooke as