Artemis promises his father, now free, and a new man (but unfortunately also an honest man) that he, too, will quit his life of crime--after hatching one final scheme involving a super-computer utilizing fairy technology.

The fairy people have wiped all knowledge of their world from the brain of the only human they're scared of: criminal genius Artemis Fowl. But now they need him - and fast. Evil pixie Opal Koboi is planning world destruction. Stopping her will involve clearing Captain Holly Short's name of murder, springing a kleptomaniac dwarf from jail and convincing a super-intelligent centaur that he doesn't know it all.

An army of fairy space probes have returned to Earth reprogrammed to destroy Atlantis and only Artemis Fowl can stop them. As he races to save the subaquatic city, he must also combat an onslaught of obsessive compulsive and delusional disorders, both byproducts of prodigious intellect and immense stress.

"Artemis has committed his entire fortune to a project he believes will save the planet and its inhabitants, both human and fairy. Can it be true? Has goodness taken hold of the world s greatest teenage criminal mastermind? Captain Holly Short is unconvinced, and discovers that Artemis is suffering from Atlantis Complex, a psychosis common among guilt-ridden fairies - not humans - and most likely triggered by Artemis's dabbling with fairy magic. Symptoms...

"Opal Koboi, the power-crazed pixie, is plotting to exterminate humankind and become fairy queen. If she succeeds, the spirits of long-dead fairy warriors will rise from the earth, inhabit the nearest available bodies, and wreak mass destruction. But what happens if those nearest bodies include animals, or two curious little boys named Myles and Beckett Fowl? Can Artemis and Holly stop Opal and prevent the end of the world?"--

"Twins Myles and Beckett face off against Lord Teddy Bleedham-Drye, the Duke of Scilly, who has been plotting revenge against them since they humiliated him"--