Casting directors, among other Hollywood insiders, called Martel the Chameleon because her appearance and her proficiency with accents and dialects enabled her to portray characters of a wide range of races and ethnicities.

The second was the episode "Twenty Two", as a nurse who repeatedly utters the sinister phrase "Room for one more, honey..." at the entrance to a hospital morgue and at the door of a doomed airplane.

She was also featured in two 1961 episodes of Route 66: "Legacy for Lucia", in which she had the title role of a Sicilian girl who inherits an American soldier's estate, and "The Newborn", in which she played a mother who dies in childbirth.

In 1966 she guest-starred as Sandra Dunkel in "The Case of the Dead Ringer", in which, aside from his role as Mason, Raymond Burr played the murderer, Grimes.

[5] In the fourth season of "Mission: Impossible" she was reunited with Leonard Nimoy in the episode "Terror," where she played an imprisoned terrorist's ruthless wife.

She received top billing as the commandant in charge of a Russian road crew in Zoltan, Hound of Dracula (1978), although it was only a bit part, lasting less than five minutes.