In the 1980s, Dalton played winemaker Julia Cumson on "Falcon Crest". In the show, Julia is the daughter of Angela Channing (Jane Wyman) and the mother of Lance Cumson (Lorenzo Lamas). Julia was at quiet odds with her mother, Angela, and for the show's first two seasons, she was troubled, but a nonviolent person. In the second-season finale, however, she was revealed to be a killer. Much of the third season focused on her dealing with life both in prison and a mental institution, and toward the end of the season, her character escaped from the mental institution to try to kill her mother. Julia was believed to have been killed in the second to last episode, but soon into the fourth season, she was revealed to be still alive. She returned sporadically during the fifth and sixth seasons, but did not reappear after 1986. After leaving the series, Dalton had guest-starring roles on "Hotel" and "Murder, She Wrote".