Heath first appeared on the Broadway stage as a replacement in the role of "Ensign Sue Yeager" for
South Pacific during late 1950. She left in February 1951 when signed for a new musical,
A Tree Grows in Brooklyn., which was based more on the 1945
screen adaption than the
original novel. The new show did a two week tryout in Philadelphia, then moved to Broadway. As a member of the original cast Heath was with the show for its tryout and the entire opening run from April thru December 1951. Her character "Hildy", created for the musical, was only briefly in the first act of the play. Her next stage role was as understudy for
Janet Blair in a short-lived comedy by
F. Hugh Herbert called
A Girl Can Tell. The show ran for only sixty performances on Broadway, from October thru December 1953. Heath, however, left half way thru the run when she caught the eye of director
Vincente Minnelli, who signed her for his next
MGM film,
Brigadoon. Heath was cast as forward Scottish lass "Meg Brockie", which in the
stage production was a secondary lead with two songs. MGM's budget reduced the part to a couple of comic scenes with
Van Johnson's character, "Jeff". Whether or not Minnelli was personally interested in Heath as gossip columnists reported, he did give her a memorable film debut. Following production of
Brigadoon, Heath returned to the Broadway stage in
Oh, Men! Oh, Women! She replaced the original female lead
Barbara Baxley as "Mildred Turner" during July 1954, and continued in the role until the show closed in November 1954. ==Film and television==