• 
  Freddie Francis

  regizor

• 
  Burgess Meredith

  Dr. Diabolo
• 
  Jack Palance

  Ronald Wyatt
• 
  Robert Hutton

  Bruce Benton
• 
  Maurice Denham

  Uncle Roger
• 
  Bernard Kay

  Dr. Heim
• 
  Timothy Bateson

  Fairground Barker
• 
  Michael Bryant

  Colin Williams

• 
  Michael Ripper

  Gordon Roberts
• 
  James Copeland
• 
  Beverly Adams

  Carla Hayes
• 
  Niall MacGinnis

  Doctor
• 
  John Standing

  Leo
• 
  Peter Cushing

  Lancelot Canning
• 
  David Bauer

  Charles

• 
  Barbara Ewing

  Dorothy Endicott

• 
  Scott Slimon

  art director
• 
  James Bernard

  departament sunet
• 
  Milton Subotsky

  producător
• 
  Max Rosenberg

  producător