Her Broadway credits included There's a Girl in My Soup, The Insect Comedy, A Flag is Born, and A Temporary Island.

Gam was an occasional panelist on the famous live broadcast CBS game show What's My Line as well in the 1950s and early 1960s.

She shared the Silver Bear for Best Actress award with Viveca Lindfors at the 1962 Berlin Film Festival, for their performances in Tad Danielewski's No Exit.

[7] In 1963, Gam was a leading member of The Minnesota Theatre Company in the opening season of The Tyrone Guthrie Theater in Minneapolis.

[5][10] Gam died on March 22, 2016, at Cedars-Sinai Medical Center in Los Angeles, California, from respiratory failure.