Practical Demonology

A chilling YA novel set in a world overrun by plague and demons-and a group of teens doing anything they can to survive

There have always been castles in the valley, and the people have always been under threat. They have always needed those thick walls, the protection of that enclosing stone. Non feels like she needs it more than most because her mother was infected by the demons that live in the woods.

As the doctor's daughter, Non had planned a career in medicine, partly to please her fath...