Thanks to Cr4b5t3r, you can now set your wits against solving a set of 7 Fowl riddles. A word of warning though; it won’t be easy!
Furthermore, the Guardian newspaper is running a competition to win a £50 book token, and a copy of the newly released paperback version of Half Moon Investigations. You can view a comic-style version of the start to the story on the HMI website (Though I recommend downloading the PDF version of it. The flash is a nightmare to use).