
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.

as Dr. Adam Royston

as Inspector McGill

as Peter Elliott

as John Elliott

as Maj. Cartwright

as Sgt. Harry Grimsdyke

as LCpl. 'Spider' Webb

as Pvt. Haggis

as Lt. Bannerman

as Pvt. Lansing

as Willie Harding

as Ian Osborn

as Russell

as Willie's Nurse

as Jack Harding

as Vi Harding

as Harry, the amorous intern

as Zena, the amorous nurse

as Hospital Superintendant

as The Vicar

as Old Tom

as Rear Gate Night Watchman

as Soldier Burned on Back

as Gerry

as Gerard

as Constable Williams

as Police Car Driver

as Police Sergeant

as Sgt. Yeardye