Susan Sullivan is an American actress known for her roles as Lenore Curtin Delaney on the NBC daytime soap opera Another World (1971–76), as Lois Adams on the ABC sitcom It's a Living (1980–81), as Maggie Gioberti Channing on the CBS primetime soap opera Falcon Crest (1981–90), as Kitty Montgomery on the ABC sitcom Dharma & Greg (1997–2002), and as Martha Rodgers on Castle (2009–2016). She earned an Emmy nomination for Lead Actress for the role of Julie Farr in the 1978 series Julie Farr, M.D. and a Golden Globe nomination for Supporting Actress for her role in Dharma & Greg.

It's a Living is an American ensemble sitcom television series set in a restaurant at the top of the Bonaventure Hotel in Los Angeles. The show aired on ABC from October 30, 1980 until June 11, 1982. After the series was canceled by ABC, new episodes aired in first-run syndication from September 28, 1985 to April 8, 1989. The series was created by Stu Silver, Dick Clair and Jenna McMahon and produced by Witt/Thomas Productions, later in association with Golden West Television (1985–86) and Lorimar-Telepictures (1986–89). The series is now distributed by Paul Brownstein Productions and Warner Bros. Television Distribution.