• 
  Roy Boulting

  regizor

• 
  Robert Ardrey

  scenarist
• 
  Jeffrey Dell

  scenarist
• 
  Bernard Miles

  scenarist

• 
  Michael Redgrave

  David Charleston
• 
  Barbara Mullen

  Ellen Kirby
• 
  James Mason

  Streeter
• 
  Lilli Palmer

  Melanie Kurtz

• 
  Finlay Currie

  Capt. Joshua Stuart
• 
  Sybille Binder

  Anne-Marie Kurtz
• 
  Frederick Cooper

  Edward 'Te' Briggs
• 
  Arnold Marl

  President of the Medical Society
• 
  Frederick Valk

  Dr. Stefan Kurtz
• 
  George Carney

  Harry
• 
  Andreas Malandrinos

  Italian Police Chief

• 
  Olive Sloane

  Woman Director
• 
  Barry Morse

  Robert
• 
  Miles Malleson

  Chairman of Directors

• 
  John Boulting

  producător
• 
  Mutz Greenbaum

  imagine
• 
  Roy Boulting

  montaj
• 
  Hans May

  coloană sonoră