• 
  Marshall Thompson

  Dr. Cliff Mitchell
• 
  John Stuart

  Dr. Warren
• 
  Bernard Archard

  Inspector White
• 
  Henry Oscar

  John Manning
• 
  John Loder

  Maj. Anderson
• 
  Harcourt Curacao

  Barman
• 
  Robert Dorning

  Captain Scott

• 
  Ernest Day

  camera and electrical departme

• 
  Geoffrey Faithfull

  imagine
• 
  Brian Clemens

  scriitor