I discovered this movie on a cheap horror movie box set and this is one of those movies that surprised me. It is definitely a cult type of movie and could become a "gulity pleasure". It is obviously dated and perhaps a little "goofy" in parts,being over 40 years old,but it is better than it has a right to be. The movie is aided immeasurably by the performance of Neil Hamilton as the leader of a cult of devil worshipers. He would later go on to be Commissioner Gordon on the Batman television series. It also has one of the catchiest instrumental theme songs I have heard from a movie of this type and era. If you are a fan of older movies and this genre,it is worth seeking out in my opinion. It can certainly be had cheaply enough.