Bud Abbott

Character: Chick Larkin

Lou Costello

Character: Mervin Q. Milgrim

Patric Knowles

Character: Jim Turner

Louise Allbritton

Character: Jane Little

Mary Wickes

Character: Juliet Collins

William Gargan

Character: Detective Inspector Lou

William Bendix

Character: Detective Sgt. Brannigan

Thomas Gomez

Character: Col. J.R. Andrews

Ludwig Stössel

Character: Dr. Anton Marek

Edmund MacDonald

Character: 'Murder at Midnight' Announcer

Jerome Cowan

Character: Heller

Walter Tetley

Character: 'Shorty', a studio pageboy

Joe Kirk

Character: Harry, 'Murder At Midnight' sound man

Don Porter

Character: 'Murder at Midnight' program manager

Norman Abbott

Character: 'Murder at Midnight' Organist

Abel Pina

Character: Acrobat (uncredited)

Antonio Pina

Character: Acrobat (uncredited)

Henry Pina

Character: Acrobat (uncredited)

Jerry Pina

Character: Acrobat (uncredited)

Jenaro Pina

Character: Acrobat (uncredited)

Milton Parsons

Character: Coroner (cameo)

Gladys Blake

Character: Telephone Operator

Eddie Bruce

Character: Bill, man telephoning Brazil

Billy Wayne

Character: Jake, man telephoning Alaska

Alice Fleming

Character: Mrs. Laffingwell, dowager telephoning Moscow

Margaret Brayton

Character: Radio Actress (uncredited)

Crane Whitley

Character: Radio Actor (uncredited)

Paul Dubov

Character: Radio Actor (uncredited)

Gene O'Donnell

Character: Radio Actor (uncredited)

Ed Emerson

Character: Announcer (uncredited)

Buddy Twiss

Character: Announcer (uncredited)

Edward Keane

Character: Man in drug store touting Juliet (uncredited)

Joseph La Cava

Character: Station Employee (uncredited)

George Ford

Character: Station Employee (uncredited)

Jerry Frank

Character: Customer (uncredited)

Duke York

Character: Attendant with the Coroner (uncredited)

Harry Strang

Character: Truck Driver (uncredited)

Bobby Barber

Character: Test Technician in Booth (uncredited)

Chuck Hamilton

Character: Policeman (uncredited)

Frank McLure

Character: Acrobatic Show Spectator (uncredited)

Frank Penny

Character: Spinelli (uncredited)