Unearthly Stranger

Unearthly Stranger is a lowbudget British scifi film, directed by John Krish for producers Julian Wintle and Leslie Parkyn, and released in the UK by Independent Artists Production Limited in 1964.

Dr. Mark Davidson John Neville, 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 Patrick Newell. The scientists are working on a project involving spaceflight by the power of mental concentration.Dr. Mark Davidson has a new Swiss wife, Julie played by Gabriella Licudi, in whom Maj. 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. Maj. Clarke does a background check and finds she never existed before her life with the doctor. As a precaution, Dr. Mark Davidson is relieved of his lab duties. With nothing else to do he works on the problem his precessor had figured out. He is able to successfully recover the lost formula. For security reasons, Maj. Clarke confiscates the notes but is struck dead in the same mysterious way. ........

Source: Wikipedia