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

A murder. A love triangle. An elusive killer. Sounds like Friday’s all-new 2-hour Dateline mystery at 9/8c with Andrea Canning… | Dateline NBC

Cheryl had a nagging feeling… Where was her daughter, Kelsey? The full story tonight at 9/8c on a classic Dateline. | Dateline NBC

The mystery of what happened to Jay Lee would haunt an entire community, and reveal a most unlikely suspect… Watch tonight at 9/8c on an all-new 2-hour Dateline with Blayne Alexander. | Dateline NBC

The mystery of who killed Anita was only just beginning… Her story tonight at 9/8c on an all-new Dateline with Blayne Alexander. | Dateline NBC