Artemis Fowl: The Atlantis Complex by Eoin Colfer
Artemis Fowl is a criminal mastermind who has fooled the fairy world several times. However this time his motives are for saving the world, and this concerns Holly Short, LEP Recon officer. And it should because Artemis is having a mental breakdown of epic proportions. Coupled with a prison breakout, this story is filled with action, mystery, and plenty of fantasy. An absolute must read for any Artemis Fowl fans.