She worked steadily in films during the remainder of the 1950s, including a heavily publicised role as Richard Carlson's model girlfriend in the science fiction film Riders to the Stars (1954) and the female lead opposite actor-director-filmmaker legend Charlie Chaplin in his final comedy to star himself, A King in New York (1957).

She was a semi-regular on the instructional series En France (1962) and the leading lady in several episodes of The Saint (1962–69), which starred Roger Moore as Simon Templar.

[6] Addams retired in the early 1980s, dividing her remaining years between Europe and the United States.

She married Don Vittorio Emanuele Massimo, Prince of Roccasecca, in 1954;[7] the wedding was the subject of a cover story in Life magazine.

[citation needed] Addams died in 1985 in a London hospital at age 54 from lung cancer.