The steel-clawed Leopard Men were looking for victims for their savage rites. The secret cult struck terror in the hearts of all the villagers. Only Orando of the Utengi dared to declare war on them. And with Orando went Tarzan of the Apes -- but a strangely changed Tarzan, who now believed that he was Muzimo, the spirit or demon who had been Orando's ancestor. There were traitors among Orando's people. And in the village of the Leopard Men was Kali Bwana, the white girl who had come to Africa to find a missing man. Only Tarzan could save her....