Percy Jackson has had an unnervingly quiet school year. But then he discovers that the magical borders protecting Half Blood Hill are failing. Unless something is done, the camp will be attacked by demons and monsters. The only way to restore power to the camp's borders is to find the mythical Golden Fleece. And the only person who can undertake this dangerous quest is Percy...This is the eagerly anticipated follow-up to "Percy Jackson and the Lightning Thief", overall winner of the Red House Children's Book Award. It is perfect for fans of "Harry Potter" and "Artemis Fowl".