• 
  Walter Forde

  regizor

• 
  Sidney Gilliat

  scenarist
• 
  Frank Launder

  scenarist

• 
  Gordon Harker

  Inspector Hornleigh
• 
  Alastair Sim

  Sergeant Bingham
• 
  Linden Travers

  D-ra Meadows
• 
  Edward Chapman

  Capitanul Fraser
• 
  Philip Leaver

  Bradfield

• 
  Kynaston Reeves

  Dr. Manners
• 
  John Turnbull

  Chief Constable
• 
  Peter Bull

  Radio Ham
• 
  Irene Handl

  Boarder
• 
  Charles Carson

  Chief Superintendent
• 
  Wally Patch

  Sergent de poliţie
• 
  Betty Jardine

  Alfred's Girlfriend

• 
  Megs Jenkins

  Maid
• 
  Morland Graham

  Griggle

• 
  Edward Black

  producător
• 
  Jack E. Cox

  imagine
• 
  R.E. Dearing

  montaj
• 
  Charles Williams

  coloană sonoră
• 
  Leo Grex

  după un roman de