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.

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

Ian MacNaughton Pvt. Haggis