This book was published for World Book Day 2004 and fits in between Artemis Fowl and Artemis Fowl and the Artic incident. Mulch Diggums, a dwarf on the run from the lower elements police, is trying to get his hands on the priceless Fei Fei tiara. But stealing it seems too easy. That's because it is too easy. Artemis Fowl, the legendary twelve year-old criminal mastermind, has set him up. He needs Mulch's help.