Also known in America as THE CREEPING UNKNOWN. Stars Brian Donlevy, Marcia Dean and Jack Warner. An astronaut returns to earth, his crew mates totally missing. The sickly survivor has a bizarre growth on him that begins looking like a "blob-cactus." It's slowly engulfing him and absorbing him through alien intelligence. It's a wild manhunt as the altered astronaut is on the run, feeding on animals and humans. An eye-popping climax at Westminster Abbey. A landmark in classic British sci-fi.