Ole Holgersen’s review published on Letterboxd:
Trapped within his own hate and lust for revenge detective Kim Soo-hyeon tracks down his wife's killer and starts a game of catch and release. But it doesn't take long before his endless search of the ultimate revenge gets out of control and innocent lives is lost.
The perfect action, serial killer, thriller, horror, revenge film. I've seen it dozens of times and I never grow tired of it. Great characters, great acting, fantastic action scenes, brilliant cinematography and suspenseful build up.
Last but not least, it's a deep and thought provoking film about how lost you can get within your self if you allow it. As they say in China; "before you embark on a journey of revenge, be sure to dig two graves".