Fascinating (and undiscovered) mystery/suspense/ thriller concerns a strange woman and her (even stranger?) guest in an isolated cabin in the woods. That's the entire cast, and basically there is only one set. A chilling movie where nothing is what it seems. You spend the entire film trying to discern who the "villain" is. This sort of thing must have impeccable acting to succeed, and does. McDowell is exquisite, the perfect choice.
Subsequent viewings are also rewarding, but you watch the movie from a complete different perspective. 2 1/2 of 4 stars on a tough scale.