This drama is for you if you like intense plot twists. Every moment you should focus and remember, otherwise it would confuse you later. I guess this aspect also lead some people to dislike the drama and for some others to like the drama because it kept us on our toes on how every character and their actions are getting connected.

The drama is obviously a purely fictional story, where psychopaths are shown as people with no empathy and murderers. but to be frank, there are many people who have tested as psychopaths but in the real world, they live normal lives, they just don't have an understanding of emotions like the rest of us and live normally. but this drama has shown all psychopaths are murderers only. This aspect I didn't like at all, but since this a fictional story I let that slide and enjoyed the drama.

Overall this is a good entertaining drama after all entertainment is the only thing we expect from any drama and this one provides. it is worth watching.