• 
  Fred F. Sears

  Agent Peters
• 
  Kernan Cripps

  Bancroft
• 
  Ron Randell

  Agent Simon Langton
• 
  Lewis Martin

  Hugo Borne
• 
  Gregory Gaye

  Professor Schuman
• 
  John Dehner

  Agent Bob Reynolds
• 
  Howard St. John

  Counterspy David Harding
• 
  Bill Hale

  Agent

• 
  Al Hill

  Laundryman
• 
  John Doucette

  Larry - a Thug
• 
  Douglas Evans

  Colonel Kilgore

• 
  Philip Tannura

  imagine
• 
  Aaron Stell

  montaj
• 
  George Montgomery (II)

  set decorator