Introducing Helen Hovey
Helen Hovey appeared in only one movie, The Sadist (1963).
She was reportedly the cousin of Arch Hall, Jr., who played
the sadist. The film is a very simple and surprisingly effective
B-movie shot by Vilmos "William" Zsigmond (Obsession,
Images, The Deer Hunter). You can see a trailer at Trailers
From Hell or watch the whole movie at the Internet Archive.
But make sure to watch for Helen Hovey.