DNA evidence speaks when victims can’t. There are over 100,000 cold cases in America. Only about 1% are ever solved, and, increasingly, advancements in forensic science are key to cracking these long-running mysteries. “Cold Case Files: DNA Speaks” focuses on murder cases that remained unsolved for decades and were ultimately cracked with DNA evidence. It explores these stunning scientific developments—as well as the unwavering dedication of families and investigators—that eventually brought the killers to justice.