Earth vs. the Flying Saucers

Space scientist Dr. Russell Marvin (Hugh Marlowe) and his wife Carol (Joan Taylor) are working on a secret missile project, but every time their rockets are launched, they are intercepted and destroyed by the more advanced technology of mysterious flying saucers hovering near the Earth. The alien race has completely surrounded the planet, giving Earth the sixty days to surrender. The enemy spacecraft appear indestructible, and Marvin sets out to find a weapon that can defeat them.