Used book – ARTEMIS FOWL - 1, Eoin Colfer, Jean-François Ménard

Artemis has a plan to restore his family's fortune. He has discovered the existence of the fairy folk and, with the help of his butler Butler, is preparing to kidnap their captain, Holly Short, to demand a ransom. There's just one snag: the fairies are armed, powerful, terribly dangerous, and Artemis seems to have somewhat underestimated their powers. At least he can be glad to have finally found a worthy adversary.