Abigail Rossum, a formerly high-ranking member of a doomsday cult, is still at large. As the case against her former co-conspirators is wrapped up in Landfall, Special Agent Carl Abrams travels to the desert town of Winter Valley to track her down. But when local authorities find her body, the mystery of her last days stretches from the deepest mountain caverns to the highest seats of local government. Once again, Carl finds himself in hostile territory and only the strangest people in town can offer any help. What price will he have to pay this time to get to the bottom of yet another twisted and bizarre plot?