A evil man at the Carl Carey Research Clinic invents an electronic ray that turns the head of a man into a panther...and Starman's into a lion!; Sandman and Sandy face the threat of a scientist who has invented a machine whose revitalizing vibrations allow a man to develop his unused brain cells, tripling his thinking power!; The Man of the Hour must outwit a pair of clever crooks who manage to steal rarities (like statues or rare books), and replace them with look alikes, which explode one hour later, thus covering up their crime and netting them easy money.