British Army radiation drills at a remote Scottish base attract a subterranean, radioactive entity of unknown nature that vanishes, leaving two severely radiation-burned soldiers... and a "bottomless" crack in the earth. Others who meet the thing in the night suffer likewise, and with increasing severity; it seems to be able to "absorb" radiation from any source, growing bigger and bigger. What is it?? How do you destroy a thing that "feeds" on energy?
Angela Crow, Anthony Newley, Anthony Sagar, Archie Duncan, Barry Steele, Brian Peck, Brown Derby, Dean Jagger, Edward Chapman, Edward Judd, Edwin Richfield, Frazer Hines, Ian MacNaughton, Jack Lambert, Jameson Clark, John Harvey, John Stone, Kenneth Cope, Lawrence James, Leo McKern, Marianne Brauns, Max Brimmell, Michael Brooke, Michael Ripper, Neil Hal
Horror, Mystery, Sci-Fi
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