Part 9/11:
The investigation's turning point was the application of advanced forensic techniques, including investigative genetic genealogy. This cutting-edge method involves analyzing minute DNA samples and cross-referencing them with public and private databases like 23andMe.
Initially, authorities struggled for weeks to find leads, but the small DNA sample found on the knife sheath proved to be the key. Using genetic genealogy, investigators constructed a family tree that eventually led them to Coberger's father and, ultimately, to Coberger himself.