An exciting detective story that had me guessing until the end, set in a very eery environment and time that got me sitting on the edge of my seat, a great take on universal morals like truth and love, and of course the idea that 'this might have happened for real' to top it all off. However: you need to be in the right mood to watch this, since it's a bit more than just mindless entertainment.
First time I've seen it and in my mind already a timeless classic!