"Russell Mardell has fashioned a hugely original and totally terrifying folk horror noir from the rich ingredients of the Wiltshire countryside ... a land where both Dennis and Ben Wheatley meet and fear of the supernatural is only matched by the evil that men do." - Cathi Unsworth, author of Weirdo. Who is The Knock-Knock Man? A ghost, a killer, or the figment of a frightened boy's imagination? It is a question that continues to haunt disgraced New Salstone police officer, Ali Davenport, fifteen months after the devastating case that changed the course of her life. Now, after the...