The Science Behind the Stories: Using Genetic Genealogy in Crime Fiction

In a captivating conclusion to the 24-hour genealogy webinar marathon, genealogist and crime fiction author Nathan Dylan Goodwin delivered a riveting presentation titled The Science Behind the Stories: Using Genetic Genealogy in Crime Fiction. Blending real-world science with fictional storytelling, Goodwin explored the evolving field of investigative genetic genealogy (IGG) and its growing role in solving cold cases, identifying unknown individuals, and informing his popular crime novels. His deep dive into both the science and ethics behind IGG provided attendees with a thorough, accessible, and thought-provoking look at a cutting-edge genealogical tool that’s transforming forensic investigations around the world.

• IGG Defined and Differentiated: Investigative Genetic Genealogy (IGG) uses consumer DNA data and traditional genealogical methods to help law enforcement identify criminal suspects or unknown human remains. While acronyms vary (IGG, FIGG, FGG), the core practice involves leveraging autosomal DNA testing, triangulating DNA matches, and reconstructing family trees. Goodwin distinguished IGG from standard forensic techniques like STR-based familial searches, highlighting its superior range and effectiveness, particularly in the U.S. and Australia.
• Ethical and Legal Complexities: The webinar delved into the legal landscapes shaping IGG's use across different countries. While the U.S. leads with over 1,000 cases, many European nations are only cautiously beginning to adopt the method due to privacy regulations like GDPR and Article 8 of the European Court of Human Rights. Goodwin also addressed public concerns around data privacy and law enforcement's controversial use of consumer databases, emphasizing the importance of informed consent and opt-in policies.
• From Fiction to Forensics: Drawing from his Venator Cold Case series, Goodwin illustrated how IGG principles are woven into compelling narratives. His fictional investigations mirror real-life techniques—such as segment triangulation, background research, and reverse genealogy—demonstrating how IGG can identify suspects even in the absence of direct DNA matches. He also underscored how geo-profiling, phenotype prediction, and social media analysis are powerful complementary tools in narrowing suspect pools.

Finally, don't miss the valuable resources provided in the accompanying syllabus. These include links to DNA analysis tools, background check services, and examples of real-life cases—all designed to enhance your understanding and application of genetic genealogy. Dive deeper into the evolving world of IGG and explore how your DNA knowledge might help solve mysteries both real and imagined.