Test space rockets exploding at liftoff and increased reporting of UFO sightings culminate in a direct attempt by alien survivors of a dead, extra-galactic civilization to invade Earth from impervious flying saucers, using ray-weapons of mass destruction.
Two detectives investigate the strangulation murder of a man whom everyone seemed to like.
An accused man helps a policeman investigate an airplane mechanic's death and a counterfeit racket.
