The writer of Ecclesiastes says there is nothing new under the sun. That's certainly true with "Gon-ji-am". It borrows liberally from other films in the genre -- most notably "Blair Witch Project," "Rec," "Unfriended" and "The Eye" (the 2002 Taiwanese film) but it borrows well. Somehow the sum of the parts is greater than the whole -- two days after seeing "Gon-ji-am" it is already fading from memory -- but it is still a pleasant way for a supernatural horror fan to while away a couple hours.
Review of Gonjiam: Haunted Asylum
