The Titan's Curse (Percy Jackson and the Olympians, Book 3)

A New York Times Bestseller -- Book 3 in the Percy Jackson & The Olympians series. When Percy Jackson gets an urgent distress call from his friend Grover, he prepares for battle. He knows he will need his powerful demigod allies, Annabeth and Thalia, at his side, his trusty sword Riptide, and . . . a ride from his mom. The demigods rush to the rescue to find that Grover is not all that awaits them. The titan lord Kronos has devised his most treacherous plot yet, and the young heroes have just fallen prey.