Kelly returned to the screen in the 1950s with television and sporadic film roles. On television she appeared in guest roles on 26 Men, Kraft Television Theatre, The Man from U.N.C.L.E, The Dick Van Dyke Show, The Wild Wild West, and Alfred Hitchcock Presents, as well as many unsold pilots. She also made a memorable appearance as Laura-Louise in the film thriller Rosemary's Baby (1968), directed by Roman Polanski, alongside veteran actors Sidney Blackmer, Ruth Gordon, and Maurice Evans.