Percy Jackson and the Titan’s Curse

It's not everyday you find yourself in combat with a half-lion, half-human.

But when you're the son of a Greek god, it happens. And now my friend Annabeth is missing, a goddess is in chains and only five half-blood heroes can join the quest to defeat the doomsday monster.

Oh, and guess what? The Oracle has predicted that not all of us will survive...
It is third book in Percy Jackson and the Olympians Series.