Early sci-fi from Hammer films with cloning and evil. Mad scientists, electro shock and a love triangle (plus throw a clone in!). X - THE UNKNOWN (1957) Stars Leo McKearn, Anthony Newley and Edward Judd. A radioactive creature from the inner depths of the earth's crust rises to feed. It needs power and nothing can stop it! A great Hammer sci-fi similar to the Quartermass films. Exciting and frightening!