Thousands of years ago, King Solomon used a powerful ring, known as the Great Seal, to imprison the fallen angels of heaven in a sacred vessel. Now both the ring and the vessel have been stolen from OIPEP by a doublecrossing Mike Arnold. Should Mike choose to wield the demons' power, all hell could break loose . . . literally. Led by the mysterious Op Nine, OIPEP has a plan to retrieve the artifacts, but their success depends on the least-likely candidate, none other than the last descendant of Lancelot, Alfred Kropp. In this thrilling new adventure, author Rick Yancey proves once again that Alfred's unexpected role as a world-saving hero is definitely no accident. Look out for the other exciting books in this series: and !