Copper's Bluff by S. M. Gratton (highly recommended books .txt) 📕

Hodges Creek, Indiana becomes the playground for a serial killer who targets Sheriff Quade Randal for murder. The women in Quade's life begin to turn up dead, becoming litter in the landscape. Each killing is a lure to bring Quade closer and closer to the killer.
When Quade meets Genna Leslie, the new schoolteacher in town, and falls in love with her, the stakes become higher, as the killer sets his sights on Genna. He knows the sheriff would be willing to do anything to save her, but would he be willing to die?