(1997–2003) and Passions (1999–2008) featured supernatural characters and dealt with fantasy and horror storylines. Their characters included vampires, witches, ghosts, goblins, and angels. The American soap opera Guiding Light (originally titled The Guiding Light until 1975) started as a radio drama in January 1937 and subsequently transferred to television in June 1952. With the exception of several years in the late 1940s, during which creator Irna Phillips was involved in a dispute with Procter & Gamble, Guiding Light was heard or seen nearly every weekday from 1937 to 2009, making it the longest story ever told in a broadcast medium. Originally serials were broadcast as 15-minute installments each weekday in daytime slots. In 1956, As the World Turns and The Edge of Night, both produced by Procter & Gamble Productions, debuted as the first half-hour soap operas on the CBS television network. All soap operas broadcast half-hour episodes by the end of the 1960s. With increased popularity in the 1970s, most soap operas had expanded to an hour in length by the end of the decade (Another World even expanded to 90 minutes for a short time from 1979 to 1980). More than half of the serials had expanded to one-hour episodes by 1980. As of 2012, three of the four U.S. serials air one-hour episodes each weekday; only The Bold and the Beautiful airs 30-minute episodes. Soap operas were originally broadcast live from the studio, creating what many at the time regarded as a feeling similar to that of a stage play. As nearly all soap operas were originated at that time from New York City, a number of soap actors were also accomplished stage actors who performed live theater during breaks from their soap roles. In the 1960s and 1970s, new serials such as General Hospital, Days of our Lives and The Young and the Restless were produced in Los Angeles. Their success made the West Coast a viable alternative to New York-produced soap operas, which were becoming more costly to perform. By the early 1970s, nearly all soap operas had transitioned to being taped. As the World Turns and The Edge of Night were the last to make the switch, in 1975. Port Charles used the practice of running 13-week "story arcs," in which the main events of the arc are played out and wrapped up over the 13 weeks, although some storylines did continue over more