Origins: Whodunnit is a nonfiction series that presents the origins of different types of crimes, law enforcement groups, criminal organizations, and crime-fighting techniques. Each book features four distinct topics related to one overarching subject, from beat cops and the Secret Service, to fingerprinting and forensics. Each topic is presented in detail, and includes an informative timeline, fun facts, asides, key words, and comprehension questions. Origins: Whodunnit is a high-interest low-level series that will hold students’ interest while they learn about the ever-changing nature of crime-related topics.