Join the Secret Seven, the beloved detective club, on their adventures in solving mysteries that are perfect for young fans of adventure, detective, and mystery series. In book twelve, the Secret Seven investigates peculiar occurrences at Torling Castle, where someone is hiding in the ruined tower, causing distress to the resident jackdaws. The Seven are determined to unravel the mystery and discover who is behind these strange happenings. Get ready to solve the case with the Secret Seven!