Bennett continued to work steadily in theatre and television and was a cast member of the television series "Dark Shadows" for its entire five year run, from 1966 until 1971, receiving an Emmy Award nomination for her performance therein. Bennett also appeared in a few more movies, most notably the cult horror thriller from Italian director Dario Argento's "Suspiria". In the last decades of her life, she was married to David Wilde, a Yale graduate and movie critic. Bennett died from a heart attack in Scarsdale, New York at the age of 80, and was buried in Pleasant View Cemetery, Lyme, Connecticut.