one of the most promising new technologies in law enforcement is forensic genealogy, in which police upload unknown DNA to open source DNA databases like GEDmatch and track down a suspect through their family tree. in each of these four cases, a relative curious about their ancestry provided police with the information they needed to finally make an arrest in a cold case. all suspects are considered innocent until proven guilty in a court of law. [00:12] steven downs [05:31] roy charles waller [09:00] jerry westrom [12:51] russell anthony guerrero "crowd hammer" by kevin macleod (incompetech.com) licensed under creative commons: by attribution 3.0 http://creativecommons.org/licenses/by/3.0/