Space: 1999, a British science-fiction television series, ran for 48 episodes broadcast between 1975 and 1977. The first series of 24 episodes began transmission in 1975, though production of the first episode began in 1973. In addition, a number of compilation films have been produced using material from multiple episodes, some containing additional footage. A brief, semi-official series denouement was filmed for exhibition at the Breakaway 1999 fan convention, held in Los Angeles, California in September 1999.