This mystery finds a woman who has moved into her new home, and when she climbs the stairs she feels an unexplained terror. She finally enlists to get help of Miss MARPLE, an elderly spinster who's hobby is solving complex murders. This novel was written by Agatha Christie, who had published more than 90 novels, plays, short stories, and movies. She died in 1976 and this is not only the final Miss MARPLE novel, it is her final book.