• 
  Ken Hughes

  regizor

• 
  Gianfranco Parolini

  Police Inspector May, at the sanitorium)
• 
  Richard Conte

  Bill Locklin
• 
  Arnold Marl

  Prof. Leon Dushenko
• 
  Ed Devereaux

  American Sailor
• 
  Colin Tapley

  Sir Clive Raglan
• 
  Donald Bisset

  Editor Harris
• 
  Rona Anderson

  Julia Jackson

• 
  Colin Gordon

  Harry Martin, reporter
• 
  Guy Deghy

  Social Club Recreation Director
• 
  Tony Sympson

  A Cab Driver
• 
  Russell Napier

  Supt. John Harrington
• 
  John Horsley

  Det. Sgt. Gibson

• 
  Jim O'Connolly

  production manager
• 
  Eric Maschwitz

  scriitor

• 
  Ken Hughes

  scriitor
• 
  James Eastwood

  scriitor