The Tomb, by F. Paul Wilson. A Repairman Jack novel.
The first, I think, followed by Legacies, Conspiracies*, All the Rage*, Hosts*, The Haunted Air* , Gateways*, Crisscross*, Infernal*, Harbingers, Bloodline*, By the Sword*, Ground Zero, Fatal Error, The Dark at the End. There are also three young adult novels: Jack: Secret Histories, Jack: Secret Circles, Jack: Secret Vengeance.
* = read.
Random musings on books, code, and tabletop games.