Criminal mastermind Artemis Fowl finally meets his match. A second juvenile genius has discovered that fairies do exist, and she is determined to capture one for scientific study. And not just any fairy. The newcomer intends to trap a demon: the most human-hating species known to man. But there are more than two players in this deadly game. Holly Short has been enlisted by Section Eight, a covert division of the Lower Elements Police, to find out just what her old accomplice Artemis is up to. And there is also a mysterious assassin, Billy Kong, who will stop at nothing to get his revenge. Only an ancient time-spell separates the demons from mankind, and Artemis must prevent it from unravelling. If he fails, the bloodthirsty tribe will relaunch their quest to wipe every human from the planet. Because that's what demons live to do. There can only be one winner - and this time it might not be Artemis Fowl.