Dallas was a popular, long-running American primetime television soap opera about the Ewings, a very wealthy Texas oil family. It aired on the CBS network for 13 seasons, from April 2, 1978 to May 3, 1991, replacing the long-running crime drama Kojak, which already ended its five-year run. It was broadcast around the world and is still considered to be the most successful drama series in television history, in or out of the United States.