Query: mystery activity books for kids
Legend of the Star Runner: A Timmi Tobbson Adventure Book for Boys and Girls (Solve-Them-Yourself Mysteries for Kids 8-12)
Sleuth & Solve: 20+ Mind-Twisting Mysteries: (Mystery Book for Kids and Adults, Puzzle and Brain Teaser Book for All Ages)
Solve the Mystery: 41 Puzzling Cases (Dover Children's Activity Books)