Dateline NBC (also known simply as Dateline) is a weekly American television news magazine reality legal show that is broadcast on NBC. It was previously the network's flagship general interest news magazine, but now focuses mainly on true crime stories with only occasional editions that focus on other topics. The program airs Fridays at 10:00 p.m. Eastern Time (9:00 p.m. Eastern for special two-hour editions). Special weekend encore editions also air at 9 or 10:00 p.m. (two-hour editions at 7 and 8:00 p.m. depending on the night). One or two-hour feature-length editions sometimes air on any given scheduled evening, often to fill vacancies in the primetime schedule on the program's respective nights due to program cancellations. In February 2021, the program aired its first ever docuseries, "The Widower", a five-hour true crime saga about a man who married six women, four of whom died.