Much has changed in the world of criminal investigation in recent years. Now in its fourth edition, this volume updates all material to reflect those changes, including new court decisions and new technologies. The text features two new chapters. The first addresses cybercrime, including identity thefts, child pornography, computer forensics, cyber bullying, and internet fraud. The second new chapter covers special investigations including hate crimes, financial crimes, arson and bombs, terrorism, and domestic abuse. The author also examines the latest investigative trends.