Book excerpt: Practical Investigation Techniques is useful for new as well as veteran investigators to establish a practical standard for conducting a wide range of diverse criminal investigations. Written by a veteran investigator, the book teaches the proper investigative techniques for such criminal activities as extortion, blackmail, credit card fraud, check fraud, fencing operations, employee theft, sports gambling, money laundering, and shoplifting rings. Practical Investigation Techniques is presented in an easy-to-read format and provides a wealth of specific investigation techniques, checklists, and case studies.