The Black Windmill

A British agent's son is kidnapped and held for a ransom of diamonds. The agent finds out that he can't even count on the people he thought were on his side to help him, so he decides to track down the kidnappers himself.

• 
  Don Siegel
• 
  Kip Gowans
• 
  Angela Allen

• 
  Michael Caine
  Maj. John Tarrant
• 
  Donald Pleasence
  Cedric Harper
• 
  Delphine Seyrig
  Ceil Burrows
• 
  Clive Revill
  Alf Chestermann
• 
  John Vernon
  McKee
• 
  Joss Ackland
  Chief Supt. Wray
• 
  Janet Suzman
  Alex Tarrant
• 
  Catherine Schell
  Lady Melissa Julyan
• 
  Joseph O'Conor
  Sir Edward Julyan
• 
  Denis Quilley
  Bateson
• 
  Derek Newark
  Monitoring Policeman
• 
  Edward Hardwicke
  Mike McCarthy
• 
  Maureen Pryor
  Jane Harper
• 
  Joyce Carey
  Miss Monley
• 
  Preston Lockwood
  Ilkeston
• 
  Molly Urquhart
  Margaret
• 
  David Daker
  MI5 Man
• 
  Hermione Baddeley
  Hetty
• 
  Patrick Barr
  Gen. St. John
• 
  Yves Afonso
  Jacques (uncredited)