"Dateline NBC" is stretching its true crime franchise into a multi-part series. (NBC via AP)NEW YORK – After the format worked for HBO and Netflix, “Dateline NBC” is trying its own version of a multi-part true crime drama this month. “Dateline NBC” producer Dan Slepian was embedding with Las Vegas police in 2008 when Thomas Randolph was arrested for murder. Not everything “Dateline NBC” does is true crime; the show has done hours on the Capitol riot, COVID-19 vaccine development and the George Floyd case in the past year. But now, with the genre so popular, securing interviews to tell the more dramatic stories is very competitive and “Dateline NBC” has a unit assigned to that task, Corvo said.

Authorities have not released the identities of the bodies discovered on the property of Chad Daybell, who married the childrens mother, Lori Vallow Daybell, a few weeks after the kids were last seen. But developments were rapid this week: Investigators searched Chad Daybells property for evidence, they found childrens bodies, and prosecutors charged him with destroying or concealing two sets of human remains. Lori Daybell already has been charged with child abandonment and obstructing the investigation and is in jail on $1 million bond. Shortly after Vallows death, Lori and the children moved to Idaho, where Chad Daybell lived. Authorities grew suspicious when Chad Daybell married Lori just two weeks later, and they had Tammy Daybells body exhumed in December.