Artemis Fowl: The Time Paradox (Artemis Fowl, #6)

From Wikipedia: Artemis Fowl: The Time Paradox (known as Artemis Fowl and the Time Paradox in Europe) is the sixth book in the series Artemis Fowl by Irish writer Eoin Colfer. It was released in the U.S. on 5 July 2008, and on 7 August in the U.K.At 432 pages, it is the longest book in the series. In Colfer's video blogs, he mentioned the book, saying it may not be the last, but the last one for at least 3 years.It is followed by Artemis Fowl: The Atlantis Complex.