The Beasts of Tarzan is the third pulp fiction novel about the Lord of the Jungle by Edgar Rice Burroughs. This book finds the ape lord settled in civilized London as John Clayton, Lord Greystoke. But he becomes the target of his enemy, Nikolas Rokoff and his henchman Alexis Paulvitch. The pair abduct Tarzan's Jane and their infant son Jack. Tarzan ends up stranded on a desert island, but with the help of Sheeta the panther and Akut the great ape he makes it back to the mainland. There he meets Mugambi, the giant chief of he Wagambi tribe, a character who goes on to become Tarzan's lifelong friend and ally. This odd group heads off together after the kidnappers into the deep jungle and when Tarzan finds them he lets his inner beast come up with creative ways of making them pay for the mistake of taking his wife and son.