Eleven-year-old twins Miles and Beckett Fowl enjoy adventure and mayhem while helping a troll escape nefarious forces that want his magic.

In the late nineteenth century, when Conor Broekhart discovers a conspiracy to overthrow the king, he is branded a traitor, imprisoned, and forced to mine for diamonds under brutal conditions while he plans a daring escape from Little Saltee prison by way of a flying machine that he must design, build, and, hardest of all, trust to carry him to safety.

After his last run-in with the fairies, Artemis Fowl's mind was wiped of memories of the world belowground and any goodness grudgingly learned is now gone with the young genius reverting to his criminal lifestyle. Artemis has no memory of the fairy people and has returned to his unlawful ways. In Berlin, he is preparing to steal a famous Impressionist painting from a German bank. He doesn't know that his old rival, Opal, has escaped from prison by...

When demons begin appearing on Earth unpredictably, foreshadowing a cataclysmic breakdown of their magic, Artemis and his friends face a new foe--a twelve-year-old girl whose intellect just might match Artemis's own--as they try to prevent catastrophe.

Opal Koboi, power-crazed pixie, is plotting to exterminate mankind 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 crows, or deer, or badgers -- or two curious little boys by the names of Myles and Beckett Fowl? Yes, it's true. Criminal mastermind Artemis Fowl's four-year-old brothers...