Human Duplicators, The (1965, USA/ITA) C-80m. **½ D: Hugo Grimaldi. Starring George Nader, Dolores Faith, Richard Kiel, George Macready. Interesting blend of spy and science-fiction movies about special agent Nader, who is assigned to investigate mysterious disappearances among noted scientists. The viewer knows from the beginning that extra-terrestrials are replacing them one by one. Not bad, only a little stuffy. Nader would later play a secret agent in several Jerry Cotton adaptations. Also known as SPACE AGENT K1 and JAWS OF THE ALIEN.