He received his Ph.D. in 2006 from Sam Houston State University. Prior to completing his degree, he worked as a financial crimes investigator for ten years. He is coauthor of The Death Penalty: Constitutional Issues, Commentaries and Case Briefs. Dr. Frantzen's research interests include legal topics in criminal justice and court systems. Specific areas of interests include police liability, police interrogation, and constitutional law topics. His e-mail is: dfrantzen@tamiu.edu