During the 1950s and 1960s, Marsh made many appearances on British and American television, including an episode of
The Twilight Zone called "
The Lonely" (1959), in which she portrayed a lifelike
gynoid;
The Moon and Sixpence (1959), In 1994, she starred in a villain role in the
Nickelodeon/
Thames Television remake of
The Tomorrow People. Her television films include
Goliath Awaits (1981), From 2000 until 2002, Marsh played the title in the
CBBC series
The Ghost Hunter. Her many stage credits included the
West End stage revival of
Boeing Boeing at the
Comedy Theatre in 2007 and in Peter Hall's production of
The Portrait of a Lady in 2008. She made an appearance in the 2008 BBC adaptation of
Jane Austen's
Sense and Sensibility; played the recurring character Lizzie Galbraith alongside
Joanna Lumley as Davina Jackson (the lead character) in Babycow Productions'
Sensitive Skin, which aired on BBC Two in 2005 and 2007. She appeared in December 2008 in a role written for her by
Mark Gatiss, in BBC Four's
Crooked House. Subsequently, a six-part second series was commissioned, and began transmission in February 2012 with Marsh's character appearing less frequently due to the stroke suffered by the actress. ==Personal life and death==