I've seen this one getting lukewarm reviews but I have to say I really enjoyed it. Not the greatest Korean thriller, but with plenty of interest. The plot is typically complex and involved, even convoluted, but fast paced with it, keeping the brain engaged. The acting is strong and it's so nice to see the guy from SQUID GAME getting to play the hero for once. The cinematography, choreography and in particular the colour palette look really nice, making this another visual treat.