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.
Dr. Adam Royston
Inspector McGill
Peter Elliott
John Elliott
Maj. Cartwright
Sgt. Harry Grimsdyke
LCpl. 'Spider' Webb
Lt. Bannerman