Mystery DNA. Two relentless detectives. A shocking takedown. Friday on an all-new Dateline at 9/8c on NBC. | Dateline NBC

A nice little neighborhood. A beautiful spring day. And Leslie Preer... dead. Tonight at 9/8c, on an all-new Dateline with Blayne Alexander. | Dateline NBC

An extraordinary journey through the criminal justice system was just beginning... The full story tonight at 9/8c on a Dateline Weekend Mystery. | Dateline NBC

It was quite obvious to the medical examiner that this was a deliberate, determined killing... The full story tonight at 9/8c on a Dateline Weekend Mystery. | Dateline NBC

The family received a shocking email… Get the full story on a Dateline Weekend Mystery tonight at 9/8c on NBC. | Dateline NBC