Deadly peril threatened Tarzan: for journeying toward the Abyssinian hinterland came the Arab sheik Ibn Jad, seeking to loot a rumored treasure city. Two American hunters, Blake and Stimbol, had arrived with their safari of negro porters. Because of Stimbol's brutality to the blacks, the two had quarreled, and had decided next day to divide the safari and go their separate ways, Blake with his camera and Stimbol...

Deadly peril threatened Tarzan: for journeying toward the Abyssinian hinterland came the Arab sheik Ibn Jad, seeking to loot a rumored treasure city. Two American hunters, Blake and Stimbol, had arrived with their safari of negro porters. Because of Stimbol's brutality to the blacks, the two had quarreled, and had decided next day to divide the safari and go their separate ways, Blake with his camera and Stimbol with his wanton rifle. Tarzan, however, ordered Stimbol back to the coast, but granted Blake permission to continue making camera studies of the wilderness folk. The two Americans next day set forth on their several ways, but Adventure was by no means done with them. For Stimbol, deserted by his blacks, fell into the hands of the Arab raider Ibn Jad. And to Blake came an even more extraordinary experience when, wandering lost and alone in a remote mountainous region, he was halted by two negroes clad in a curious medieval costume, and taken through a tunnel and to a strange castle. A portcullis was lifted-and he found himself in the presence of mail-clad knights speaking the English of the Crusades.