Kathleen Robertson (born July 8, 1973) is a Canadian actress and producer. She is best known for her roles as Tina Edison, in the Canadian sitcom
Maniac Mansion (1990–1993), and as
Clare Arnold, in the
Fox teen drama series
Beverly Hills, 90210 (1994–1997). Robertson also starred in a number of films, and from 2011 to 2012 played the role of Kitty O'Neill in the
Starz political drama series
Boss. In 2014, Robertson began starring as homicide detective Hildy Mulligan in the
TNT series
Murder in the First.