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.
Genres:
Dean Jagger as Dr. Adam Royston
Leo McKern as Inspector McGill
William Lucas as Peter Elliott
Edward Chapman as John Elliott
John Harvey as Maj. Cartwright
Michael Ripper as Sgt. Harry Grimsdyke
Anthony Newley as LCpl. 'Spider' Webb
Ian MacNaughton as Pvt. Haggis
Peter Hammond as Lt. Bannerman
Kenneth Cope as Pvt. Lansing
Michael Brooke as Willie Harding
Frazer Hines as Ian Osborn
Neil Wilson as Russell
Stella Kimball as Willie's Nurse
Jameson Clark as Jack Harding
Jane Aird as Vi Harding
Neil Hallett as Harry, the amorous intern
Marianne Brauns as Zena, the amorous nurse
Max Brimmell as Hospital Superintendant
Brown Derby as The Vicar
Norman MacOwan as Old Tom
Anthony Sagar as Rear Gate Night Watchman
Edwin Richfield as Soldier Burned on Back
John Stone as Gerry
Lawrence James as Gerard
Frank Taylor as Constable Williams
John Stirling as Police Car Driver
Jack Lambert as Police Sergeant
Archie Duncan as Sgt. Yeardye
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