The Day Mars Invaded Earth

The Day Mars Invaded Earth aka Spaceraid 63 is an independently made 1963 blackandwhite CinemaScope science fiction film produced and directed by Maury Dexter and starring Kent Taylor, Marie Windsor, and William Mims. The film was released by Twentieth Century Fox. Dexter later said the films title came from Associated Producers Robert L. Lippert and was meant to evoke memories of Foxs 1951 classic The Day the Earth Stood Still.

Dave then encounters his body double in the mansions main house. The duplicate Dave informs him that Mars is inhabited and that all Martians are beings without any physical bodies, an energylike intelligence. They traveled to Earth via the Martian probes highgain, twoway radio transmitter, destroying the robotic rover in the process. Now on Earth, the Martians plan to replace key humans with duplicates to quash any further Earth missions to Mars. Since Daves wife and children would likely recognize a duplicate, they had to be replaced, too. Family friend Web William Mims comes by later and finally gets the main gate open, but on his way back, the MartianDave reduces Web to ash.Later, Dave and his family get into a car and leave the estate, a duplicate MartianWeb behind the wheel. As they drive past the estates empty swimming pool, five distinct body shapes of piled ash can be seen on the concrete bottom. The pools water jets then turn on, washing the ash outlines away. ........

Source: Wikipedia