Sea of Monsters by Rick Riordan
I loved The Lightning Thief so much that I had to continue the series. This is the second book in Percy Jackson and the Olympians. This time, Percy is finishing seventh grade and hoping to go back to Camp Half-Blood Hill for the summer. On the last day of school, Percy’s PE class is attacked by Laistrygonians—giant cannibals in Greek mythology—and Percy and a homeless classmate are saved by Annabeth (Percy’s best friend from book one). Immediately, Percy learns that the sacred tree guarding the camp has been poisoned and the camp is under attack. Another surprise is that the homeless boy, Tyson, is a Cyclops and Percy’s half-brother (Poseidon is also Tyson’s dad). Finally, Percy is having nightmares that his friend, the satyr Grover, is in danger.
With the scene set, Hermes sends Percy off on a quest to find Grover, who is the prisoner of the Cyclops Polyphemus (yes, the one that Odysseus fought). To do so, he must cross the Sea of Monsters (now called the Bermuda Triangle) and survive Scylla and Charybdis. At the same time, Percy must retrieve the Golden Fleece, which will heal the sacred tree. Always lurking in the background is Luke, the former friend who betrayed Percy and who is trying to bring the Titan Kronos back to power so that Olmpus can be overthrown.
This second book in the series is another fast-paced adventure, with more hilarious takes on the Greek gods. Circe now turns men into guinea pigs (real pigs are too much like real men and messy) and Hermes wears track shorts and a ‘New York City Marathon’ t-shirt. Oh—and he invented the Internet as well (sorry Al Gore!)