Someone care to explain the ending? *SPOILERS*
THIS CONTAINS SPOILERS!!!
So, Hyunki somehow poisoned the rapists, and made them hallucinate so that they killed themselves or die from fear. That much was clear. The emails were triggers for this. Or at least that´s what I thought until the last few minutes of the film...
The guy getting the email at the end of the movie was obviously the guy with the scar the heroine was looking for, who had raped her. Why is he getting the email, and who sent it? Since he didn´t, as far as I could tell, have any connection to the Salt House rape and murders, it wouldn´t work as a trigger, if we suppose that the heroine imitate the MO of Hyunki to get back at him, so what gives?
Or does this mean that the ghosts *were* real, and exacting vengeance on rapists in general....?
Second: at the end, when the heroine starts on her novel, the chief calls her up, and asks her if she has seen a painting from the memorial website of the murdered girl. What painting was this exactly, and what is it´s significance? The only painting mentioned in the film, was the one of the silhouette on the stairs, from the salthouse....which all 3 of them saw, so what are they talking about!?
Lastly: the heroine figuring that the dead dog had something important to do with the case, and even concluded that it had something important in it´s innards, seemed like an extremely ridiculous stretch....Did I miss something, or was something lost in translation/or is there a cultural gap like explanation for this?