this is my first kdrama and im glad i find this one since im a dorama lover esp. crime,thriller and investigation genre and i could say this one has a great story and i recommended this if you also love this kind of genre. the twist is really good every episode has new revelation and the battle of wits remind me of death note and liar game .

acting is great for some actors like yoo beom jin but the actor of kim han soo makes me cringe. and his role makes stupid decision all the time.

music is really great makes every moment intense and sending a message "this one has a serious battle of wits"

rewatch value: if you miss something or dont have any drama on your watchlist.