What is the nature of the evil that terrorises Dyrysgol? Detective Inspector Bernard Owen's investigation involves people disappearing from this remote Welsh village. Local anger is directed towards Dyrysgol Castle and its enigmatic owner. But whilst Viscount Ravenwood is a little strange, is he a murderer? Then another man goes missing and his car is left with great claw marks across the roof, as Owen and his officers are dragged towards the bloody conclusion of the mystery of Dyrysgol...