Susan Michaela Sullivan (born November 18, 1942) is an American actress, known for several notable roles on various television programs. Sullivan played the role of Lenore Curtin Delaney on the daytime soap opera, Another World (1971ƒ??1976); waitress Lois Adams during the first season (1980-1981) of the comedy It’s a Living, Maggie Gioberti Channing on the soap opera, Falcon Crest (1981ƒ??1989); and Kitty Montgomery on sitcom Dharma & Greg (1997ƒ??2002). She currently appears in Castle as Richard Castle’s mother, Martha Rodgers.