Dive into a world of clever riddles, captivating pictures, and spy missions in this book of riddles for young detectives. So let's be a perfect spy and complete challenging riddle book for kids. Unleash the detective within and embark on an exhilarating journey with "King of Riddles series: A Book of Picture Riddles." Discover, search, and solve mysteries in this thrilling adventure that will captivate readers of all ages. If you're planning a family trip and finding ispy travel book, "King of Riddles series" is the perfect companion. Encouraging observation skills, critical thinking, and problem-solving abilities, it provides an entertaining and educational experience for kids.