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.
Dean Jagger | Dr. Adam Royston |
Edward Chapman | John Elliott |
Leo McKern | Inspector McGill |
Anthony Newley | LCpl. 'Spider' Webb |
Jameson Clark | Jack Harding |
John Harvey | Maj. Cartwright |
William Lucas | Peter Elliott |
Peter Hammond | Lt. Bannerman |
Marianne Brauns | Zena, the Nurse |
Ian MacNaughton | Haggis |
Michael Ripper | Sgt. Harry Grimsdyke |
Kenneth Cope | Pvt. Lansing |