A sterling, well-written story that sets the series off to a flying start. The characters are well-drawn, the locations ably described and the genuine sense of fear and spookiness, around Terror Castle, is well evoked. The story does feel a bit slight, but that’s only to be expected as the book needs space to set everything up. Well worth a read and the only thing that dates this (it’s 46 years old!) is the fact that a silent film-star plays a major part in it. A cracking book.