Starman must face the peril from a scientist who has invented a diminishing ray, which he promptly uses on the Astral Avenger, Dr. Selby, Doris and Chief Allen. In the final confrontation, the Light accidently is bathed in the rays of the disintegration tube which reduces him to nothing!; Hourman investigates the uncle of a young boy, who has inherited "Castle Manor", and discovers that this uncle is robbing the boy of huge sums of money.; Sandman must track down the killer of a former District Attorney and near death of a court Judge at the Astronitorium, by use of his Barium Z-Ray tube's purple ray, which brings death to its victims by causing purplish skin, open mouth and bulging eyes.