First: If you want a thriller look no further. I love movies like this! It's a perfect mixture of blood, gore and suspense. I was insanely intrigued the whole time and Lee Jong Suk's sinister performance was brilliant. My jaw stayed on the floor. I never lost interest and I'm one of those people that easily gets distracted.
Second: If you ever needed a clue as to how dim witted and corrupt government officials in any country can be you'll find the answer here too lol
Third: Revenge and Karma are oh so sweet...