Unknown may hit store shelves as a bit of a mystery to many, but it has all the elements in place to be successful. A solid script, an amazing cast, and enough intrigue to keep you in your seat from beginning to end. It doesn't hold your hand through the journey, either, making it a success, albeit not a genre redefining one. The Blu-ray release for Unknown is very good, but a step below excellent, and features little in terms of supplements. Give it at least a rent, but do consider a blind purchase. This film readily invites a repeat viewing or two.