Cutting-edge DNA tech has helped crack seemingly unsolvable cases that remained cold for decades. In our newest '20/20: The After Show,' Deborah Roberts speaks with David and Kristen Mittelman about how their company, Othram, has helped find answers in the most talked about criminal investigations. Listen to '20/20: The After Show' wherever you get your podcasts, and watch on YouTube, Hulu and Disney+. #DNA #Investigation #Tech #TrueCrime