Decent thriller. A slow build, but it is to be expected. I found some of the editing and scene shifts a bit odd. I liked the ending as it didn't go as I believed during the course of watching the film. There are some issues that, if I talked about, would bring up spoilers. But all in all, it was a good film. I wouldn't necessarily watch it again any time soon(The film isn't at fault, I just don't find myself enjoying multiple viewings of films similar to this), but Chan-wook Park has succeeded in his first English film.