I’ll be honest with everyone - the only reason one should watch this over a director's cut (which for me is a 10/10), is to later watch the director's cut and appreciate it even more.

Memoir of a Murderer is a story about simple characters in a complex and convoluted situation - both internally and externally. The addition of dementia is such a fresh and fascinating take on the typical serial killer story. What happens when a “reformed” serial killer starts to lose himself in the past, regressing to immoral behavior and not being able to control his urges that were tamed for years? Add another layer of him trying to catch another serial killer while struggling to remember all the encounters and identities of people around him - what a horrifying, but also captivating scenario.

What the movie does perfectly well is confusing the audience - what is reality? What is just a fragment of imagination? What was a lie and what was a forgotten memory? No matter how much you might pay attention, you cannot differentiate between the real and the fake, unless the movie itself wants to tell you the truth. How did they achieve that? Smart directing, amazing editing, trusting the audience and one aspect that made the director's cut better - the conclusion that actually makes sense.

Sol Kyung Gu as Kim Byung Soo? Perfection. The range of emotions and expressions, the chilling narrations and that eye twitch… The performance that somehow made me sympathize with a serial killer, even feel bad for him. Disagreeing with his murderous nature was obvious, but the fear of losing your identity and years of life and memories is such a horrible vision, it was hard not to feel anything while watching the movie.

Overall, probably one of the best serial killer movies I have seen in years, easily top5 of all times. Personally preferred the director’s cut, so if one is not up to watching mostly the same movie twice, skip the theatrical release.