This show is watchable, but I think it's greatly overrated and I don't understand why the ratings are so high on this site. This is certainty not nearly at the level of In Family We Trust, Voice, or even Kluen Chiwit.
The mix of police investigation and paranormal elements is not my favorite. The characters are not particularly interesting. Some plot holes, but nothing dealbreaking. Just a kind of average story.
The ending is satisfying enough, but what happened to the father felt like an opt-out.