Evil Baron Toadfettle is plotting to hold a loyal subject of King Alvin prisoner at Portcullis Castle. The good king has asked you (the reader) to find out who has been captured. In the course of searching for clues in the mysterious photographs that cover each page, you discover that Baron Toadfettle has another sinister agenda. Can you discover what it is and warn King Alvin before it's too late? Guaranteed to intrigue every hopeful detective. Part of the "Usborne Solve It Yourself" series.