A breakthrough in investigative genetic genealogy helped police identify a suspect in a 13-year-old Arlington murder. But the defense says DNA alone doesn't prove guilt and is raising questions about the evidence. Subscribe to the CBS News Texas YouTube channel: / @cbstexas Watch CBS News Texas 24/7: https://www.cbsnews.com/texas/live/ Download the CBS News app: https://www.cbsnews.com/mobile/ Follow CBS News Texas on Instagram: / cbsnewstexas Like CBS News Texas on Facebook: / cbsnewstexas Follow CBS News Texas on X: https://x.com/CBSNewsTexas Try Paramount+ free: https://www.paramountplus.com/?ftag=P... For video licensing inquiries, contact: [email protected]