This is straight on folk/creature horror that starts out of the gate with solid action and only heats up along the way. A strange old family on a farm with a dark past. Sacrifice, pacts with things best left alone a storm that locks everyone on the mountain in, and anyone who could help out, all put sheriff Elli Cheetham and those she serves and protects in a danger none of them are ready to accept, let alone defend against.
One thing that struck me as a US reader is the similarities between the poor mountain people in thie story and our own Appalachian communities. If not for some of the language, or the fact I already knew this was set in the UK, I might have thought it was taking place in Tennessee. Crazy people, crazier monsters, and not much time to solve it before everyone dies.
A lot of fun and with perfectly believable characters. Good stuff.