What I like the most is this trio's combo. The detective, the exorcist priest, and the psychic. One of a kind trio I've ever seen! The three went through a difficult battle and never failed to give in my cheer and respect.

The casts portraying the possessed people were so amazing too!

Another tricky point was the revelation of the real culprit. I meant the body the demon went it. I'd not blabber anything about it but just be prepared and try not to OH challenge.

...I hate it when the reason the culprit kills was just for fun. It could have some sort of a heavy reason to make it build a stronger plot. I don't like it to be a circus and juggles the main characters (not just them) being played while seriously fighting for their goal. It's sickening. I know it happens to almost every death or serial killing dramas and I just don't know why. Psycho things? Like seriously it affected and ruined lots of people, others died, suffering. And it happened because of a piece in a whole pizza. It wasn't that huge to make a fuss!

It affects the entire plot of the main root of a story — the reason why the antagonist does this and that — how the conflict was born. But if I generalize everything, it's merely so-so.