This sounds like it has everything I love in a novel all in one. Castles, remote scottish locations, an old family secret and a mystery to solve. I live and travel around Scotland regularly and always like to visit our beautiful castles (there is thousands so may take a while) I always wonder about the people who have lived there, their stories, the murders, secrets and lies that always go hand in hand with historical buildings. In all this sounds like the perfect read.