The Half-Blood colony is in grave danger! Percy's refuge is about to be invaded by the fearsome Kronos and his army of monsters. Are they planning to go through the famous Daedalus labyrinth? Percy and his friends must find Daedalus before that happens, but a series of trials will hinder their mission, involving a dragon, Sphinxes, an enchanted island? as the final battle draws near.“Is Percy Jackson's fourth and penultimate book the best yet? » Kirkus Review« A flamboyant adventure where no holds barred, offering spectacular twists and turns, and above all a breathtaking ending. »Los Angeles Times Book Review