• 
  John Frankenheimer

  regizor

• 
  Edward Anhalt

  scenarist

• 
  Michael Caine

  Noel Holcroft
• 
  Lilli Palmer

  Althene Holcroft
• 
  Anthony Andrews

  Johann von Tiebolt / Jonathan Tennyson
• 
  Shane Rimmer

  Lt. Miles
• 
  John Frankenheimer

  Bernie Sussman
• 
  Michael Lonsdale

  Ernst Manfredi

• 
  Shelley Thompson

  Executive Secretary
• 
  Andy Bradford

  Hartman
• 
  Eve Polycarpou

  Manfredi's Secretary
• 
  André Penvern

  Frederick Leger
• 
  Mario Adorf

  Erich Kessler/Jürgen Mass
• 
  Michael Scott

  Noel Holcroft
• 
  Dan van Husen

  Journalist

• 
  Bernard Hepton

  Commander Leighton
• 
  Victoria Tennant

  Helden von Tiebolt / Helden Tennyson
• 
  Hugo Bower

  Gen. Wilhelm von Tiebolt
• 
  Alexander Kerst

  Gen. Heinrich Clausen
• 
  Richard Münch

  Oberst (as Richard Munch)
• 
  Carl Rigg

  Anthony Beaumont
• 
  Michael Wolf

  Gen. Erich Kessler