The Adelson children take the stand. A missing woman's husband is arrested. And a deep dive on DNA.

Two of Donna Adelson's children testify this week for the prosecution. In Northern California, a missing woman's husband is indicted for her murder more than a year after she vanished -- and a year and a half after he was indicted on felony domestic violence charges for an alleged attack on her. Plus, a former prosecutor on DNA's uses and pitfalls. Find out more about the cases covered each week here: www.datelinetruecrimeweekly.com To learn more about Dateline LIVE in Nashville on Sept. 28, and to get tickets, go here: https://www.nbcnews.com/dateline-event