This book describes the methods investigators use to catch assassins, along with several real-life examples of professionals cracking cases. Short paragraphs provide easy-to-read text, while vivid photographs make the book engaging and accessible. The book also includes informative sidebars, a skills checklist, comprehension questions, a glossary, an index, and a list of resources for further reading. This book is part of the Apex Honors imprint, which has a reading level of grades 3–4. However, the imprint is specifically designed for older readers, with interest levels of grades 3–9.