Ace Comics #6

Boy King battles the supernatural menace Nightmare and his skeletal companion, who are terrorizing a desert town and holding captive two prospectors suspected of being escaped prisoners of war. Boy King pursues Nightmare through various confrontations, discovering that a criminal named Caldon is orchestrating events and attempting to eliminate witnesses. The story culminates with Boy King and his partner Sleepy confronting the villains near a prison camp, working to stop Caldon's murderous scheme and rescue the captive kids of Prospector Town.