Radioactive blobby thing roams the Scottish moors killing soldiers on a training exercise. The X is, of course, an attempt to cash in on the new X-certificate, and the film is better than it has a right to be. It manages to build up a great atmosphere of terror.
Script: Jimmy Sangster
Director: Leslie Norman
Players: Dean Jagger, Edward Chapman, Leo McKern, William Lucas, Michael Ripper, Anthony Newley, Kenneth Cope, Edward Judd