The murder of Ryan Cooper, as portrayed in Dateline, shocked many when it was originally reported, and it continues to hang over the city of Traer, Iowa.

NBC’s long-running newsmagazine “Dateline” finished its 33rd season with an across-the-board ratings win, beating its ABC rival “20/20” for the first time in six years in a season that saw ...

Tonight on a new two-hour “Dateline” — Dennis Murphy reports on Brittany Stork’s decades-long search for answers about her mother’s mysterious death. Here is a preview from tonight’s episode, “Return ...