• 
  John Llewellyn Moxey

  regizor

• 
  John Carradine

  Narator
• 
  Christopher Lee

  Gregor
• 
  Victor Maddern

  Mason
• 
  Klaus Kinski

  Manfred Hart
• 
  Leo Genn

  Elliott
• 
  Suzy Kendall

  Natasha
• 
  Henry B. Longhurst

  Hotel porter

• 
  Cecil Parker

  Sir John
• 
  George Fisher

  Fourth man

• 
  Alfred Vohrer

  imagini de arhiva
• 
  Johnny Douglas (I)

  departament sunet
• 
  John Trumper

  montaj
• 
  Harry Alan Towers

  producător
• 
  Edgar Wallace

  scriitor

• 
  Harry Alan Towers

  scriitor