Forensic Theory and Practice is an essential reference guide for professionals working at the intersection of genealogy and the legal system. Published by the National Genealogical Society, this comprehensive manual explores how genealogical methods are applied to resolve complex legal matters, including estate settlements, real estate title disputes, citizenship eligibility, heir location, unknown parentage cases, and military repatriation. Authored by leading experts Michael S. Ramage and Catherine B.W. Desmarais, this practical guide addresses critical real-world scenarios where genealogical expertise serves as an adjunct to the law. The book covers investigative genetic genealogy, natural resources, and multiple other subspecialties, making it invaluable for forensic genealogists, legal professionals, and anyone working in this emerging field. With contributions from field authorities and endorsements from certified genealogists, this volume provides guidance on meeting genealogical and legal goals while maintaining privacy and ethical standards.