What if Lizzie Borden wasn’t a patricidal maniac with an axe? What if she was trying to save the world from the Old Gods who want to take over and destroy everything? What if there was a “church” trying to bring the return of these all-consuming creatures? What if a mathematician was using his computations to kill the chosen sacrifices to spoil those plans? If all those what-ifs were true, you’d have “Chapelwood,” by Cherie Priest.