| Director | John Krish |
|---|---|
| Genre | science fiction film |
| Runtime | 78 min |
| Country | United Kingdom |
Dr Mark Davidson, the narrator, is in fear for his life. His predecessor died under mysterious circumstances just after making a major breakthrough. The cause of death ("an explosion inside his brain") is being withheld by Secret Service agent Major Clarke. The scientists are working on a project involving spaceflight by the power of mental concentration.
Davidson has a new Swiss wife, Julie, in whom Clarke takes an interest. Julie has a number of unusual characteristics, such as sleeping with her eyes open, never blinking and having no pulse, which makes her husband suspect she is an alien. She also frightens children and can handle very hot objects with her bare hands. After frightening a whole schoolyard of children, though, it emerges she can cry, though the tears burn her cheeks. Clarke does a background check and finds she never existed before her life with the doctor. As a precaution, Davidson is relieved of his lab duties. With nothing else to do he works on the problem his predecessor had figured out. He is able to recover the lost formula. For security reasons, Clarke confiscates the notes but is struck dead in the same mysterious way.
Eventually, Julie confesses that she is an alien sent to kill her husband and that she must leave because she has failed, as she has fallen in love with him. Despite his pleas, she vanishes, leaving only an empty dress. He rushes into his office and makes the tape which narrates the film, warning that aliens want to prevent the breakthrough. He is then interrupted by his secretary, who announces she is also an alien and she is there to finish the assignment. A scuffle ensues and, her concentration threatened, she falls backwards out of a window but only an empty dress lands on the pavement. The scientists rush downstairs and are quietly surrounded by a crowd of grim-visaged women, all of whom seem to be aliens.