This Usborne chapter book offers a collection of true stories centered on crime and the methods used for detection. It provides an engaging, factual look at how mysteries are solved, from historical cases to modern forensic techniques. While the subject matter involves crime, the focus is on the investigative process and the pursuit of justice, making it an educational yet exciting read for curious elementary-aged children. Parents should be aware that it deals with real-world criminal acts, though presented in an age-appropriate, informative manner.