Screenplay is pegged around a typical American family which resides in a small California town. Their existence is tranquil until the 12-year-old son (Jimmy Hunt) awakens in a thunderstorm to observe a Martian spaceship land on a nearby sandpit. His scientist-father (Leif Erickson) and mother (Hillary Brooke) investigate the scene, but return with a sinister demeanor that’s in abrupt contrast to their usual cheerful attitudes. A city physician (Helena Carter) and astronomer (Arthur Franz) are convinced that an invader has landed and the country is in vital danger.
Imaginative yarn makes full use of astronomical and lab equipment as well as government atomic research installations as backgrounds to heighten the realism.
The cast turns in creditable portrayals under William Cameron Menzies’ fine direction. Carter is coolly efficient as the femme doctor; Franz likewise is mentally adroit as the astronomer who alerts the army, while young Hunt impresses as the frightened lad.