Born in Toronto, Ontario, she was part of the country's burgeoning theatre and television industry in the decade of the 1950s.
Fresh out of the University of Toronto's Hart House, she quickly became known for her fresh beauty and roles at the new Crest Theatre and their Straw Hat Players summer circuit in the Muskoka Lake district.
She also acted in notable television films, including Anne of Green Gables (as Josephine Barry) and Jackie, Ethel, Joan: The Women of Camelot (as Rose Fitzgerald Kennedy).
She also starred in the Canadian television series Wind at My Back and House of Pride.
King died, aged 81, in Toronto, reportedly from complications of emphysema.