What we've got here is an atomic age science fiction film noir entitled Phantom from Space from 1953, directed by W. Lee Wilder, and starring a cast of square-jawed unknowns whose obscurity lends realism to the quasi-documentary approach taken by the fillmmakers.
Our story begins with a fast-moving UFO entering US airspace, then crash landing off the California coast. Murder and mayhem ensue. Actually, most of the first act plays like your standard cops-and-robbers-type movie, and except for the radar gizmos on the roof of the investigator's car, you might think you're watching an episode of Highway...