• 
  Stanley Baker

  Detective Inspector Jamieson
• 
  Peter Sallis

  Lloyd
• 
  Bruce Boa

  Professor Friedland
• 
  John Challis

  Casson
• 
  Derek Francis

  Octavius Lamb
• 
  Mona Hammond

  Nurse
• 
  Miles Anderson

  P.C. Hanworth
• 
  Cyril Shaps

  Mr. Lavender

• 
  Simon Fisher-Turner

  Steven
• 
  Denis Lill

  Sgt. Beck
• 
  Barbara Leigh-Hunt

  Madeleine

• 
  David Frost

  producător