William Powell

Andrew Gentling

Shelley Winters

Catherine Sykes

Marsha Hunt

Martha Wier

Dorothy Hart

Helen Gentling

James Gleason

Captain Gledhill

Felix Bressart

Professor Morris Avrum

Art Baker

Henry Pritchard

Sheldon Leonard

Detective Pacciano

Howard Freeman

Dr. Markheim

Houseley Stevenson

Montgomery Thatcher

Paul Harvey

Mr. Arnspiger

Francis Pierlot

Dr. Herbert Watson

Jess Barker

Arnold Sykes

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)

Johnny Duncan

Bellhop (uncredited)

Adolph Faylauer

Bald Man at Lecture (uncredited)

Sandra Gould

Newspaper Girl (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)