Book excerpt: The best-selling Introduction to Criminal Justice: Practice and Process uses a practical, applied approach to teach students the foundations of the U.S. criminal justice system. Award-winning authors Kenneth J. Peak and Tamara D. Madensen-Herold draw on their many years of combined practitioner and academic experience to explain the importance of criminal justice and show how key trends, emerging issues, and practical lessons can be applied in the field. The Fourth Edition keeps students up to date with new content on recent cases, cybercrime, policing strategies, drug abuse, human trafficking, terrorism, immigration, and much more. This title is accompanied by a complete teaching and learning package.