Season One of the mystery crime-drama series Switch began with a pilot movie called "Las Vegas Roundabout", which premiered on CBS on March 21st, 1975. The regular series began airing on September 9th, 1975 and spanned a total of twenty-four episodes. The season starred starred Robert Wagner as Peterson "Pete" T. Ryan, and Eddie Albert as Frank MacBride - an ex-cop and an ex-con who form their own private detective agency. Co-stars on the series include Charlie Callas as Malcolm Argos and Sharon Gless as Maggie Philbin.