J. Scott Harr has been employed in various areas of the law for over 28 years. He has served as a social worker, police officer, firefighter, and emergency medical technician. For over 11 years he held the position of chief law enforcement officer and public safety director for a Twin Cities suburb. He is licensed as a lawyer, police officer, ... Read moreand private investigator, and founded Scott Harr Legal Investigations in 1985. He sits on the Minnesota Peace Officer Standards & Training Board and chairs their training committee. Having taught as community faculty at Normandale Community College, and served as resident faculty at Metropolitan State University School of Law Enforcement and Criminal Justice, he is presently the Criminal Justice Chair at Concordia University St. Paul in Minnesota. He is also the author of CONSTITUTIONAL LAW AND THE CRIMINAL JUSTICE SYSTEM, 4/e (Wadsworth Publishing). The late K�ren Matison Hess, Ph.D., wrote extensively about law enforcement and criminal justice, gaining a prestigious reputation for the consistent pedagogical style around which she structured each textbook. Dr. Matison co-authored multiple editions of MANAGEMENT AND SUPERVISION IN LAW ENFORCEMENT, JUVENILE JUSTICE, INTRODUCTION TO LAW ENFORCEMENT AND CRIMINAL JUSTICE and CONSTITUTIONAL LAW AND THE CRIMINAL JUSTICE SYSTEM in addition to CRIMINAL INVESTIGATION. Many of the renowned strengths of Dr. Matison's practical presentation as well as her investigative insights remain hallmarks of this new edition. Show Less