X: The Unknown

Army radiation experiments awaken a subterranean monster from a fissure that feeds on energy and proceeds to terrorise a remote Scottish village. An American research scientist at a nearby nuclear plant joins with a British investigator to discover why the victims were radioactively burned and why, shortly thereafter, a series of radiation-related incidents are occurring in an ever-growing straight line away from the fissure.

• 
  Dean Jagger

  Dr. Adam Royston
• 
  Leo McKern

  Inspector McGill
• 
  William Lucas

  Peter Elliott
• 
  Edward Chapman

  John Elliott
• 
  John Harvey

  Maj. Cartwright
• 
  Michael Ripper

  Sgt. Harry Grimsdyke
• 
  Anthony Newley

  LCpl. 'Spider' Webb
• 
  Ian MacNaughton

  Pvt. Haggis
• 
  Peter Hammond

  Lt. Bannerman
• 
  Kenneth Cope

  Pvt. Lansing