The Ridge by Jeffery X Martin
For generations, the Sanford family have lived by themselves on the rural outskirts of Elders Keep. But now, Lucas Brock and his pregnant wife, Jude, have chosen to make their home among them as the first outsiders to settle onto Wednesday Ridge in a century. With the arrival of new blood, the horrific secrets the Sanfords have been hiding are coming to light. There's something on the ridge, something that should not exist. It is ancient. It is ravenous. And on the ridge, everything is prey.