Demon Thief is a book in Darren Shan's The Demonata series. Though it is the second book in the series, it is a prequel to Lord Loss, the first book in the series. The protagonist is also different from that of the first book, a character called Kernel Fleck, who is the narrator of the book. Demon Thief takes place thirty years before Lord Loss so most of the characters from the first book did not appear, though a few did.