In a bizarre sci-fi horror tale, a mysterious phantom in a radioactive spacesuit begins attacking people in San Fernando Valley after a UFO sighting. The creature, an invisible humanoid from outer space, is tracked down to Los Angeles and eventually becomes trapped inside the Griffith Observatory, where he meets a grisly end due to his dwindling breathing gas reserves. With a meager budget and hastily assembled cast, "Phantom from Space" (1953) delivers on its promise of low-budget thrills, but ultimately falls short of tension and coherence.