It's a good job I watched this on Netflix as I was able to scroll through it. It was such a slow film to start with, I must've skipped through the first 30-40 minutes.
It's only after this point you get to know why this woman was taken and thrown into a room (that's not a spoiler alert, it's in the title.) Its drawn out way too much with no actual information until you're nearing the end. It does have a good twist ending, and at the end, actually makes you wonder who was the psycho. I wouldn't recommend it though.