The Journal. The Journal.

To Solve a Cold Case, French Police Bent DNA Privacy Law

Aug 12, 2026 · 25m

Summary

This episode examines how French police solved the "Predator of the Woods" cold case by bypassing strict European privacy laws to use U.S. genetic genealogy databases. Host Jessica Mendoza and correspondent Matthew Dalton discuss the tension between law enforcement’s desire to solve violent crimes and Europe’s robust data protection norms. The story highlights the arrest of suspect Bruno Lambrich-Gonsalvo and the ongoing legal debate over regulating this investigative technique in France and across Europe.

Topics discussed

The Predator of the Woods: France's notorious cold case Sponsors: Harvey AI and Indeed How genetic genealogy solved the Golden State Killer European privacy laws vs. US DNA testing norms French police bypass laws to use US DNA databases Sponsors: Optum and Anthropic Precedent: Sweden's use of genetic genealogy Tracing the suspect through massive family trees Arrest and suicide of Bruno Lambrish-Gonsalvo Legal challenges and future of DNA forensics in Europe Outro and sponsors: Benjamin Franklin Plumbing and Stamps.com
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