After some minor television appearances, Hartman starred on the short-lived
Bewitched spin-off,
Tabitha during 1977–78. She subsequently appeared frequently on television in guest roles, and appeared in the 1981
CBS TV remake of
Jacqueline Susann's
Valley of the Dolls, as
Neely O'Hara. She was on
WLS-TV's 1979 special "You're Never Too Old" recorded at
Marriott's Great America in
Gurnee, Illinois. Hartman's breakthrough as an actress came in 1982 when she began appearing on the prime time drama
Knots Landing, playing rock singer Ciji Dunne. Her character engaged in romances with the characters played by
Ted Shackelford and
Michael Sabatino. Hartman was popular with audiences, and when Ciji was murdered off-screen in 1983, there was a public uproar. As a solution, Hartman was brought back on the show as
Cathy Geary, also a singer, who later marries an unbalanced
televangelist played by a young
Alec Baldwin. Hartman remained with the show until 1986, when she was released due to budget cuts and because the show's writers felt there were no further storylines for her character. During her time on the series, she appeared in the film ''
Where the Boys Are '84'' produced by
Allan Carr. She also sang the film's theme song. Hartman recorded four solo albums between 1976 and 1987 – two for
Kirshner Records, one for
RCA Records, and one for
Atlantic Records. Her most notable song is "If Love Must Go", which she performed on various television shows like
Solid Gold and
The Merv Griffin Show. Despite additional contributions from successful songwriters and producers including
Jeff Barry,
Dobie Gray,
Bryan Adams,
Rick Springfield,
Will Jennings, and
Holly Knight, the albums were not commercially successful. She achieved her most notable success with a duet with her husband entitled "
When I Said I Do". It reached Number 1 on the
Billboard Hot Country Singles & Tracks charts on December 18, 1999, and was nominated for a
Grammy Award. The duet was ranked No. 11 on ''
CMT's 100 Greatest Duets in Country Music'' in 2005. They recorded a second duet titled "Easy For Me to Say", which peaked at No. 27 on the country music charts in 2002. In the summer of 1994, Hartman co-hosted
Universal Studios Summer Blast, a TV special celebrating the 30th anniversary of
Universal Studios. In April 2011, her albums
Lisa Hartman,
Hold On and
Letterock were released on CD with bonus tracks by
Wounded Bird Records under license from
Sony. Her last album, '
Til My Heart Stops was reissued on CD in 2008 on Wounded Bird Records as well. In May 2012, Hartman starred in
Flicka: Country Pride, a movie from
Twentieth Century Fox Home Entertainment. She plays the mother of a budding equestrian rider (
Kacey Rohl). In 2005, Hartman starred in a made-for-TV film,
Back to You and Me, on the
Hallmark Channel. In 2020, she and husband Clint Black appeared in
season four of
The Masked Singer as "Snow Owls", notably competing as the series' first duet competitors while riding in an egg-shaped vehicle. ==Personal life==