"The common denominator in this whole thing… is Lori." Keith Morrison sits down for an exclusive jailhouse interview with Lori Vallow Daybell tonight on an all-new Dateline at 9/8c. | Dateline NBC

Why all that death and mayhem? Keith Morrison asks Lori Vallow Daybell in her first TV interview, tonight at 9/8c on an all-new 2-hour Dateline mystery. | Dateline NBC

We began our coverage of this story just over 5 years ago. And now, for the first time, you’ll hear from the woman at the center of it all… Watch tonight at 9/8c on an all-new 2-hour Dateline on NBC. | Dateline NBC

You remember the case, right? Who can forget it… Keith Morrison's exclusive interview with Lori Vallow Daybell Friday on Dateline at 9/8c. | Dateline NBC