When does Kate & Allie return?

Kate & Allie is an American sitcom television series that aired on CBS from March 19, 1984, to May 22, 1989. It stars Susan Saint James as the free-spirited Kate McArdle and Jane Curtin as her more conservative childhood friend, Allie Lowell. The show was one of the most popular and critically acclaimed sitcoms of the 1980s, consistently ranking in the Top 20 shows until its final season.