Attack of the Volcano Monkeys — Wiley Miller

In this irresistible adventure, Basil comes face-to-face with evil von Rottweil on mysterious Monkey Island--where monkeys have human intelligence. Again Basil must face his fears to save the world.
Basil Pepperell thinks he's ordinary, but when he and his friend Louise ride her pet pteranodon, Beatrice, to forbidden Monkey Island, they discover an advanced society of monkeys bred to have human intelligence. This is the work of evil Euric von Rottweil, who is planning to use his monkeys to further his plan of "Peace Through World Domination." Stunning full-color illustrations on every page make this a wild, exciting page-turner.