William Powell
Andrew Gentling
Shelley Winters
Catherine Sykes
Dorothy Hart
Helen Gentling
James Gleason
Captain Gledhill
Felix Bressart
Professor Morris Avrum
Sheldon Leonard
Detective Pacciano
Howard Freeman
Dr. Markheim
Houseley Stevenson
Montgomery Thatcher
Francis Pierlot
Dr. Herbert Watson
Mikel Conrad
Freddie Blair
Vangie Beilby
Old Lady at Lecture (uncredited)
Marjorie Bennett
Waitress (uncredited)
Leonard Bremen
Truck Driver (uncredited)
Paul Brinegar
Reporter (uncredited)
Frank Cady
Reporter (uncredited)
Edmund Cobb
Policeman (uncredited)
Helen Crozier
Maid (uncredited)
Johnny Duncan
Bellhop (uncredited)
Adolph Faylauer
Bald Man at Lecture (uncredited)
Sandra Gould
Newspaper Girl (uncredited)
Ethyl May Halls
Woman at Window (uncredited)
Chuck Hamilton
Policeman (uncredited)
Herbert Heywood
Attendant (uncredited)
Tommy Ivo
Horace - Boy at Roadblock (uncredited)
Lyle Latell
Reporter (uncredited)
George Lynn
Policeman (uncredited)
Enid Markey
Clara (uncredited)
Maurice Marsac
Louis (uncredited)
Charles McAvoy
Policeman (uncredited)
Ralph Peters
Portly Man (uncredited)
Jack Rice
Good Humor Man (uncredited)
Brick Sullivan
Policeman (uncredited)
Charles Sullivan
Truck Driver in Cafe (uncredited)
Jim Toney
Bartender (uncredited)
Harland Tucker
Clerk (uncredited)
Minerva Urecal
Gas Station Attendant (uncredited)
Dorothy Vaughan
Leona (uncredited)
Charles Flynn
Policeman (uncredited)
