Dateline’s Keith Morrison shares a preview of his exclusive, and bizarre, jailhouse interview with the infamous ‘doomsday mom’ Lori Vallow. "She came in and she had her own agenda. It was a very interesting tennis match we had," he says. It airs Friday on NBC. » Subscribe to TODAY: youtube.com/@TODAY About: TODAY brings you the latest headlines and expert tips on money, health and parenting. We wake up every morning to give you and your family all you need to start your day. If it matters to you, it matters to us. We are in the people business. Subscribe to our channel for exclusive TODAY archival footage & our original web series. Connect with TODAY Online! Visit TODAY's Website: today.com Find TODAY on Facebook: facebook.com/today Follow TODAY on Twitter: twitter.com/TODAYshow Follow TODAY on Instagram: instagram.com/todayshow » Stream TODAY All Day: today.com/allday About: TODAY All Day is a 24/7 streaming cha...