Ruby Jean Jensen was born and raised in southwest Missouri. Most of her life has been spent in Missouri or nearby in northwest Arkansas. In addition to writing, Ruby has always been an animal lover, and spends most of her time now caring for her pets. Ruby began her writing career in the 1970's by writing Gothic romance novels with a strong paranormal story line. In the 1980's she switched over to the purely horror genre and has more than twenty five published books, and has an enthusiastic following
Jensen's novels typically involve murderous children or children's dolls. Often the ghosts or other undesireable characters are children who avenge their own deaths by dispatching the guilty parties.