Who Done It?

Two dumb soda jerks dream of writing radio mysteries. When they try to pitch an idea at a radio station, they end up in the middle of a real murder when the station owner is killed during a broadcast.

• 
  Erle C. Kenton
• 
  Howard Christie

• 
  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
• 
  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)