Blood everywhere — the kitchen, the hallway, the back door. And a singular command: “Get the hell out of the house.” Blayne Alexander has the full story tonight at 9/8c on an all-new 2-hour Dateline on NBC. | Dateline NBC

They’re detectives. Moms. Swifties. And they don’t stop until they find answers. Blayne Alexander and Lester Holt discuss the detectives who solved the case featured in last Friday’s Dateline on a new episode of Talking Dateline. Available now, wherever you listen. | 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