Kim delivers consistent erotic jolts even when the story starts to drag, and the actors dig into their characters' duplicity, shifting viewers' sympathies with each outlandish development.

Although not flawless under close scrutiny, “Hidden Face” is ultimately titillating, engaging, stylishly shot and performed, standing as a prime example of the modern erotic thriller.

Even the queer ending is oddly believable, because all of these people are just so...weird, in a way that defies clear categorization.

it was shocking when I saw the ending part. she was slaved ultimately never freeing from her old sister. From middle school, she always has been a slave and there was a contrary vision though. at the first part of the movie, very sexual scene not keeping eyes off from the screen. I felt some kind of heterogeneous sentiment since cultural element is not tinged with Korean one. In spite of the fact, I deserved seeing the movie.