Honestly, its beautifully shot and there's Ji Soo, I'm a huge fan and it gave me an intense rush, violent, gritty and fast paced action literally never stops.

A bit lacking in emotional depth. More violent than the last one, and there's Ji Soo, so naturally I had a great time. But it's pretty messed up, so be warned. But the cinematography is excellent.

Emotional depth wise I prefer the first season with Park Hae Jin. But plenty of content for those who can take violence. Another thing, in the last one they were actual serial killers but in this show pretty much all the back stories reveal people who are basically innocent.