Alexis Paulvitch, one of Tarzan's enemies, wants to get even, so he draws Tarzan's son, Jack, away from London, but Jack isn't so easy to capture and kill. He escapes, and makes a home among the apes as his father did. He becomes known as Korak the Killer, and meets a lovely young woman named Meriem. Narrow escapes, fun action, and a definite sense of adventure in the wilds of Africa make this a must-read book.