This was intended to be the first of series of sequels made for television but the film's unenthusiastic reception meant this did not happen.
A "fetus papyraceus" is also known as being a "vanishing twin". The Wikipedia website states: "A vanishing twin, also known as fetal resorption, is a fetus in a multi-gestation pregnancy which dies in utero and is then partially or completely reabsorbed by the twin. The occurrence of this phenomenon is sometimes referred to as twin embolisation syndrome or vanishing twin syndrome (VTS), since the 1980s when twin pregnancies were made visible early on by means of ultrasound. Occasionally, rather than being completely reabsorbed, the dead fetus will be compressed by its growing twin to a flattened, parchment-like state known as fetus papyraceus."
Star Faye Grant would later become famous when she exposed her former husband Stephen Collins as a sex-predator; she played tapes from their marriage counseling sessions where he admitted to exposing himself to children. Many called this move (sending private and confidential tapes from a therapy session) vindictive and underhanded on her part. Other people applauded her bravery in alerting the public to a sexual predator.
The first of The Omen films to be made-for-television.