Criminal Investigation, Fourth Edition, offers a comprehensive and engaging examination of criminal investigation and the vital role criminal evidence plays in the process. The text focuses on the five critical areas essential to understanding criminal investigations: background and contextual issues, criminal evidence, legal procedures, evidence collection procedures, and forensic science. In this new edition, esteemed author Steven G. Brandl goes beyond a simple how-to on investigative procedures and analyzes modern research and actual investigative cases to demonstrate their importance in the real world of criminal justice. New to the Fourth Edition: New and updated statistical information, research findings, investigative procedures, and legal cases ensure students are learning about the most current research in the field. Several new "From the Case File" chapter introductions and 25 new in-chapter "Case-in-Point" investigative case examples make it easier for students to connect the content to the real world. More than 75 new photos, most of which are case photos from actual investigations, illustrate key concepts to help keep students engaged with the content. New material on documenting evidence via reports provides examples of well-written police reports to help students build better writing skills. New material on social media and evidence from electronic digital devices discusses how to use new technology as a source of information. A stronger focus on terrorism and the use of technology in investigations encourages students to discuss and critically analyze the future of criminal investigations. New sections titled "Mental Mistakes in Criminal Investigations," "Perspectives on the Criminal Investigation Process," and "Qualities and Characteristics of Investigators" offer students tips and advice for conducting successful investigations. New material on touch DNA helps students see the benefits and limitations of scientific evidence gathered from a crime scene. Give your students the SAGE edge! SAGE edge offers a robust online environment featuring an impressive array of free tools and resources for review, study, and further exploration, keeping both instructors and students on the cutting edge of teaching and learning. Learn more at edge.sagepub.com/brandl4e.