Heartfelt main characters ,amazing story and good music suitable to the tone of the series. I normally don't like shows with a weak ending but the story until that was so good , it didn't effect me that much. If it follows up with season 2, I think my score will change (I think it may go higher if director doesn't let the quality down). Absolutely a must watch kdrama for people who love crime and impactful main characters.

It would also be a good gateway for people who love crime and good writing and want to get into kdramas.