Overview

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.

Cast

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