When a twelve-year-old evil genius tries to restore his family fortune by capturing a fairy and demanding a ransom in gold, the fairies fight back with magic, technology, and a particularly nasty troll.

Artemis Fowl is going straight-as soon as he pulls off the most brilliant criminal feat of his career... but his plan goes awry, leaving his loyal bodyguard, Butler, mortally injured. Artemis knows his only hope to save Butler lies in fairy magic, so once again he is forced to contact his old rival, Captain Holly Short of the LEPrepcon fairy police. Miraculously, Butler is healed, but there is a catch: he has aged fifteen years.

Artemis is at boarding school in Ireland when he suddenly receives an urgent video-email from Russia. In it is a plea from a man who has been kidnapped by the Russian Mafiya: his father. As Artemis rushes to the rescue, he is stopped by captain Holly Short of the LEPrecon fairy police. But this time, instead of battling the fairies, he is going to have to join forces with them if he wants to save one of the few people in the world he loves.

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...

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.

Riley, a teen orphan boy living in Victorian London, has had the misfortune of being apprenticed to Albert Garrick, an illusionist who has fallen on difficult times and now uses his unique conjuring skills to gain access to victims' dwellings. On one such escapade, Garrick brings his reluctant apprentice along and urges him to commit his first killing. Riley is saved from having to commit the grisly act when the intended victim turns out to be a scientist...