One of the best horror movies I've seen in a long time. There are a few "yeah, right, no one is going to do that" in it. But just go with flow in those moments. The slow pace adds to the suspense. However, you must pay attention through the entire movie. Some key elements are quick and easy to miss if looking away, or making a comment to someone. Then it brings you to the ending...... OH.. MY... GOD! How I LOVE the ending!!! One of the best, most satisfying endings ever in a horror movie. And one that I most absolutely did NOT see coming. I've watched this movie at least 10 times now, and going to go watch it again now.
Although it is definitely in the "Horror" genre, there is really no gore. Not compared to most horror movies. Which goes to prove that you don't need gore to make a great horror movie.
Horror fans, and people who love suspenseful movies, WATCH "CAVEAT"!!