The Sea of Monsters: Percy Jackson and the Olympians: Book Two
The Sea of Monsters is the second book in Rick Riordan's Percy Jackson and the Olympians series. In Sea of Monsters, Percy returns unexpectedly to Camp Half-Blood to learn that it's in trouble. The magic that protects its borders has been poisoned and the camp is falling victim to attacks by monsters. Now Percy and his friends must go on another quest to find a magical item that will save Camp Half-Blood.
I enjoyed The Sea of Monsters more than The Lightning Thief. I found that the characters were much more developed. Riordan also started revealing more of the over-arching theme to the series and gave us a hint as to exactly what Percy's biggest quest will be as at least part of the Oracle's prophecy involving Percy is revealed. This series is becoming even more enchanting as it goes along.