Invasion of the Saucer Men

A teenage couple making out in the woods accidentally runs over an alien creature with their car. The creature's hand falls off, but it comes alive, with an eye growing out of it. In retaliation, the saucer-men kill Joe (Frank Gorshin), an opportunistic boozehound who stumbles across the body. When the teens return with the police to the scene, only the corpse of the town drunk remains. Fortunately, the dead man's roommate believes them but the trio must convince authorities before the alien creatures multiply and take over the world.