It was a case that touched generations of investigators, who refused to quit until the killer was found… And we'll tell you all about it on a Dateline Weekend Mystery tonight at 9/8c. | 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

Tonight at 9/8c, Josh Mankiewicz has all the details in the disappearance of a young woman, and an issue at the center of our story: relationship violence. | Dateline NBC