he series stars Barbara Eden as Loco Jones, a model in New York City. Merry Anders portrayed Michelle "Mike" McCall, a secretary; Lori Nelson played Greta Hanson, a game show hostess; all three young women are apartment mates. Nelson left the series after thirty-nine episodes; in the story line, her character was married off. The third role was then assumed for the remaining thirteen segments by Lisa Gaye, as Gwen Kirby, also a secretary. How to Marry a Millionaire was one of the first television series filmed by Twentieth Century Fox