Marianna Hill is an actress who portrayed Doctor Helen Noel in the Star Trek: The Original Series first season episode “Dagger of the Mind” in 1966. She filmed her scenes between Thursday 11 August 1966 and Wednesday 17 August 1966 at Desilu Stage 9 and Stage 10.
Hill was born in Santa Barbara, California, lived in several countries as a child and learned a number of accents. This, combined with a vaguely foreign beauty, earned her a number of feature film and television roles. She worked steadily from the early 1960s until the early 1980s. Her film work included a number of B-movies, such as The Invisible Strangler. She is cousin to retired American general Norman Schwarzkopf and artist/entrepreneur Stephen Hutchison. Hill and John Anderson appeared in the Perry Mason episode “The Case of the Greek Goddess”.