Wow! I’ve binged this after coincidentally coming across this show, although I do think it went a bit “downwards” towards the end.
Although the “genius, cold on the outside” ML character is quite typical, the acting and storytelling is very good.
I find the production to be well made in most aspects.

Even if it is a mix of different familiar plots from various movies and shows, the script is well paced and with unique twists. There are some weaknesses in the story, and some things leaves questions. Like what on earth does his friend do for a living, since it appears he can do whatever he wants. And without giving away a spoiler, ML did mention a crucial point about the perps abilities that it felt like they all forgot or overlooked later.

As for the FL character, she kind of disappeared/weakened a bit. I wish they had let her have a stronger presence, although the story revolved more around ML as it went on.

I watched this on Viki, and it was annoying that the subtitle credit popped up WAY too often, and there are some translations (English) that are misspelled and others that appeared to be a bit poorly translated.