• 
  Gordon Douglas

  regizor

• 
  Raymond Burr

  Krebs
• 
  William Tannen

  FBI Chemist
• 
  Steve Pendleton

  Police Detective Gaines
• 
  Myron Healey

  FBI Agent Thompson
• 
  Louis Hayward

  Philip 'Scotty' Grayson
• 
  Grandon Rhodes

  Adolph Mizner
• 
  Arthur Space

  Mr. North

• 
  Dennis O'Keefe

  Daniel F. O'Hara
• 
  Philip Van Zandt

  Anton Radchek
• 
  Lee Phelps

  Poliţist
• 
  Onslow Stevens

  Igor Braun
• 
  Reed Hadley

  Narator
• 
  Lowell Gilmore

  Dr. William Forrest
• 
  Ray Teal

  Sergent de poliţie

• 
  Gale Storm

  Voice on Tape Recorder

• 
  Rudolph Sternad

  art director
• 
  Edward Colman

  camera and electrical departme
• 
  Edward Colman

  imagine
• 
  Paul Sawtell

  departament sunet
• 
  Grant Whytock

  producător
• 
  Howard Bristol

  set decorator
• 
  Bertram Millhauser

  scriitor
• 
  George Bruce

  scriitor