Ishiro Honda directed this unusual film, which combines plot elements from both the crime and science fiction genres. A wanted criminal mysteriously disappears from a crime scene, leaving behind only his clothes. Japanese police track him by following his wife, who does lead them to the criminal, who has somehow mutated into a hydrogen creature who can change into a blob-like creature at will, and who can be traced to a mysterious ghost-ship anchored in the harbor that was exposed to unknown radioactive fallout. Can this menace be stopped? Good F/X, but story drags, and differing genres clash unsuccessfully in forgettable film.