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

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

Diane was suddenly the unlikely center of a strange and disturbing mystery… Her story tonight on a classic 2-hour Dateline Weekend Mystery at 9/8c on NBC. | Dateline NBC

It will most assuredly be riveting, Unofficial Dateline Friday Ambassador, Kara! Get locked in, everyone. Andrea has a brand-new mystery heading your way tonight at 9/8c. | Dateline NBC

A cruel killing. A grieving widow. And a family with plenty of secrets... Tonight on an all-new Dateline with Blayne Alexander at 9/8c. | Dateline NBC