Apprentice magician Conn battles a new magical threat while continuing to drive friend and foe alike mad with irritation in this headlong sequel. As the clueless magicians of the local college continue to deny reality, a rising tide of attacks from Dementor-like Shadowmen prompts the Duchess to send her daughter Rowan to the distant desert city of Desh to see if it has been similarly afflicted. Having blown up his home in a pyrotechnic experiment and left beloved bodyguard/nanny/cook Benet badly injured, remorseful Conn invites himself along—and soon finds evidence that the sorcerer-king of Desh is hiding something ugly indeed. Told in a mix of narrative and correspondence, the tale hurtles along to a climax in which Conn deals Evil a sharp setback that also sets up the next episode. Readers of the opener will understand the sometimes complex relationships better than latecomers, but the sequel stands sturdily on its own, and Conn, equally gifted at picking locks and being a thorn in the side of all, remains a vivid, memorable lead. (maps, recipes, thumbnail bios) (Fantasy. 11-13)