This is surprisingly good movie from the 80's. Somehow the script was a little bit shallow. I was surprised by special effects that seemed very good for its time. Don't consider this movie as action genre. It's far from that. I consider it as fantasy/mystery/horror. I didn't read the book but this movie is really worth watching. Some of the questions in the end remained unanswered. Why is the keep cursed? What posses it? What is the creature from the keep - demon, devil or something else? What is the being acted by Scott Glenn that fought against the creature - some archangel or what? Maybe the answers are in the novel. One of the greatest moments in the movie is music that matches the atmosphere. Directing and acting were very good too.
