Serial (radio and television) usually ran from Monday through Friday at exactly the same time every day. A show called The Smith Family which ran only one night a week on WENR in Chicago during the early 1930s was credited as the "great-granddaddy of the soap operas" by radio historian Francis Chase, Jr. One of the other shows that helped pioneer the daytime soap opera/serial was "The Guiding Light", which debuted on NBC radio in 1937, and then switched to CBS Television in 1952. "The Guiding Light" final episode aired on September 18, 2009, having a total of 15,762 episodes air on CBS. Some
Soap opera "Unter uns" in late 1994. ZDF started a business venture with Canada and co-produced the short-lived series "Family Passions", starring actors such as Gordon Thomson, Roscoe Born, Dietmar Schönherr and a young Hayden Christensen. The daytime serial premiered on December 5, 1994, lasting 130 episodes. After its cancellation, the network debuted "Jede Menge Leben". Even after a crossover with three soaps, "Freunde fürs Leben", "Forsthaus Falkenau" and "Unser Lehrer Doktor Specht", the soap was canceled after 313 episodes. Sat.1 tried to get into the soap business as well, after successfully airing the Australian soap opera "Neighbours", which was dropped in