“It was horrible. Worst thing I've ever seen.” The full story, tonight on an all-new 2-hour Dateline mystery at 9/8c on NBC. | Dateline NBC

Tonight on a Dateline Weekend Mystery at 9/8c, Dennis Murphy has all the details on the murder that Cedar Rapids, Iowa never forgot... | Dateline NBC

It was a school night; it wasn't a night to stay out late... So where was Michelle? More tonight at 9/8c on a Dateline Weekend Mystery with Dennis Murphy. | Dateline NBC

They spent decades searching for justice for Michelle, and then… Tonight at 9/8c on a Dateline Weekend Mystery on NBC. | Dateline NBC