Invaders from Mars

George Gardner encourages his 12-year-old son David's dreams of becoming an astronaut by stargazing with him. A thunderstorm wakes David, and he observes a strange alien spaceship landing on Copper Hill, just beyond the house. His father agrees to investigate, but returns behaving strangely and with an unexplained mark on the back of his neck. David's mother Helen and others as well soon become similarly changed from their normal selves, worrying David.