“Silent Retreat” (*1/2 out of four) was a routine and boring horror thriller about six members of a media company who go on a weekend business retreat at (oh boy) an isolated lodge in the woods which was formerly a mental institution and leads to them all being endangered. Don’t any of the characters in horror movies ever watch horror movies on their own? You would think by now most characters would know better to steer clear of cabins in the woods. You should also know better than to watch by-the-numbers horror junk like this.