Fear Is the Key

A deep-sea salvage expert enacts an elaborate plan to infiltrate and take revenge on a criminal organization that dealt him a foul misdeed.

• 
  Michael Tuchner
• 
  Colin M. Brewer
• 
  David Munro
• 
  Peter Cotton
• 
  Chris Kenny

• 
  Barry Newman
  John Talbot
• 
  Suzy Kendall
  Sarah Ruthven
• 
  John Vernon
  Vyland
• 
  Dolph Sweet
  Jablonsky
• 
  Ben Kingsley
  Royale
• 
  Ray McAnally
  Ruthven
• 
  Peter Marinker
  Larry
• 
  Roland Brand
  Deputy
• 
  Tony Anholt
  FBI Agent
• 
  Elliott Sullivan
  Judge Mollison
• 
  John Alderson
  Tanner (uncredited)
• 
  James Berwick
  (uncredited)
• 
  Hal Galili
  Cibatti (uncredited)
• 
  Ernie Heldman
  Bartender (uncredited)