Good Against Evil

This is a 1977 tv-pilot about a writer (played by Dack Rambo) who teams up with a priest (played by Dan O'Herlihy) to battle a devil worshiper (Richard Lynch) and his merry band of cronies.
Rambo's character meets and falls in love with a woman that unfortunately for him has been chosen by Lynch and his group to give birth to the Anti-Christ. It's all very 1970s, and clearly designed to cash in on the success of the movie The Exorcist; the climactic scene is in fact the exorcism of a young girl just as in the more popular (and better) film.
The only other notable feature of the film is that it's the first television appearance of Courtenay, BC's own Kim Catrall, now famous for playing Samantha Jones on Sex and the City.
And then there's the DVD cover which has nothing at all to do with the movie. Does that look like 1977 American tv to you?