Who Done It? (1942)

Bud Abbott Chick Larkin

Lou Costello Mervin Q. Milgrim

Patric Knowles Jim Turner

Louise Allbritton Jane Little

Mary Wickes Juliet Collins

William Gargan Detective Inspector Lou

William Bendix Detective Sgt. Brannigan

Thomas Gomez Col. J.R. Andrews

Ludwig Stössel Dr. Anton Marek

Edmund MacDonald 'Murder at Midnight' Announcer

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Jerome Cowan Heller

Walter Tetley 'Shorty', a studio pageboy

Joe Kirk Harry, 'Murder At Midnight' sound man

Don Porter 'Murder at Midnight' program manager

Norman Abbott 'Murder at Midnight' Organist

Abel Pina Acrobat (uncredited)

Antonio Pina Acrobat (uncredited)

Henry Pina Acrobat (uncredited)

Jerry Pina Acrobat (uncredited)

Jenaro Pina Acrobat (uncredited)

Milton Parsons Coroner (cameo)

Gladys Blake Telephone Operator

Eddie Bruce Bill, man telephoning Brazil

Billy Wayne Jake, man telephoning Alaska

Alice Fleming Mrs. Laffingwell, dowager telephoning Moscow

Margaret Brayton Radio Actress (uncredited)

Crane Whitley Radio Actor (uncredited)

Paul Dubov Radio Actor (uncredited)

Gene O'Donnell Radio Actor (uncredited)

Ed Emerson Announcer (uncredited)

Buddy Twiss Announcer (uncredited)

Edward Keane Man in drug store touting Juliet (uncredited)

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Joseph La Cava Station Employee (uncredited)

George Ford Station Employee (uncredited)

Jerry Frank Customer (uncredited)

Duke York Attendant with the Coroner (uncredited)

Harry Strang Truck Driver (uncredited)

Bobby Barber Test Technician in Booth (uncredited)

Chuck Hamilton Policeman (uncredited)

Frank McLure Acrobatic Show Spectator (uncredited)

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Frank Penny Spinelli (uncredited)