It's definitely not one of the better horror movies ever made, the acting, the dialogue, all a bit on the cheesy side and most who saw it would probably agree the only thing it really had going for it was the full frontal nudity...however, when I saw this movie for the first time, that was one long night, I never got to sleep, the ending scared the HELL out of me and I literally never got to sleep that night.
All things aside, it was a very scary movie, I found it VERY scary because of all the movies that they say 'there is that element of it COULD happen', well this is one that really COULD happen and is largely a reality because how many women marry men they think they know and then they turn out to be money hungry psychos who kill their wives and children? So from that viewpoint it was a very scary film, at least it was to me.