The cover for the Australian version
Artemis Fowl: The Eternity Code (now Artemis Fowl and the Eternity Code) is the third book in Irish children's fiction author Eoin Colfer's Artemis Fowl series.
Plot
Several months after the events in the Artic Incident, thirteen-year-old criminal mastermind Artemis Fowl II is now stuck at a boarding school, but that still doesn't stop him from carrying out his dirty plans, and after this, he's going straight. Artemis has built a futuristic device, the C Cube, from stolen fairy technology, which makes all other human technology obsolete. Though the technology he harnessed is outdated below ground, the cube he creates is still better than any human supercomputer by about five decades.
When Fowl meets Chicago businessman Jon Spiro to show him the Cube, things go horribly wrong. The Cube nearly reveals the LEP satellite probes, and to make things worse, Spiro ambushes Fowl, steals the Cube, and almost kills Butler, his bodyguard. However, Fowl manages to revive him, with a little help from Butler's old friend Justin Barre, with the aid of cryogenics and fairy healing magic - courtesy of Captain Holly Short of the LEPrecon squad.
Unfortunately, the healing does not work as planned, leaving Butler alive, but fifteen years older, and unable to carry out his duties as a bodyguard. However, his sister, Juliet agrees to help Fowl recover the stolen computer. With the aid of the rest of the LEPrecon team, and kleptomaniac dwarf Mulch Diggums, they break into Spiro's company, Fission Chips, and begin their mission.
Spiro is quite a challenging opponent, even for Artemis Fowl. He has almost insane security on everything: Fingerprint scanners, armed thugs, the Mafia – and that's just for starters. But he's still no match for the fairies, and soon Fowl has the Cube back, and is working on yet another scheme.
The fairies have discovered by now that Fowl is too dangerous a foe, and fearing their safety, they make Artemis agree to a mind wipe in exchange for getting the cube back. His memory is wiped of everything fairy-related, but he has a plan to return. He gives Mulch Diggums a coin with a hole in it covered with gold leaf. However, it is actually a disc with information to let Artemis revive his memories and knowledge of the existence of the People and will play a vital role in the fourth book.