Alfred Kropp was just trying to survive high school when his guardian uncle gets him roped into a suspicious get-rich-quick scheme that changes his life forever: stealing Excalibur, the legendary sword of King Arthur. But after Alfred unwittingly delivers the sword into the hands of a man with enormously evil intentions, he sets off on an unlikely quest to try to right his wrong and save the world from imminent destruction. This gripping, fast-paced, hilarious novel is both a thrilling adventure story and an engaging account of one boy's coming of age.

"Le Sceau de Salomon est un anneau, Alfred. Il était en la possession d'une secte apocalyptique. Entre de mauvaises mains, il pourrait être utilisé dans un but maléfique

First Alfred Kropp lost-and found-the legendary sword Excalibur. Then he defeated King Paimon, arguably the nastiest of demons ever to roam the earth. What could possibly be in store for him now? Plenty, it turns out. Not only is a dangerous new enemy tracking Alfred's every move, even the people who have sworn to protect him no longer seem trustworthy. Who, or what, is Sofia, and is there a connection between Sofia and the mysterious Thirteenth Skull? As Alfred struggles to hold his enemies at bay and keep his friends in even closer sight, trust and betrayal begin to clash in terrifying ways, and the reluctant hero who has always narrowly avoided death may not be getting out of this adventure alive... Just right for fans of Alex Rider and Stephen King, the third installment in this acclaimed series is a compulsive page-turner readers won't soon forget.