The Son of Neptune(part 4)by Surya

In the end they the destroy giant. Find the sale lost on a quest long ago. They ride back to camp, but the giant/cyclops/centaur army is winning. Luckily, by the time they reach camp Percy's memory is fully restored and his half-brother Tyson (who by the way is a cyclops)has rescued their freind Ella the harpy. They ride into battle, drive back/disinergrate the army, and have a victory feast. The next morning the ship from Camp Half-blood arrives.I liked this book a lot and suggest it to people who like fiction.