seriously, I hate leaving reviews on Drama's before finishing them but this is just no. Straight off from episode 1 I was just not impressed. Episode one was all over the place for me. It was messy and irritating. It began getting a bit more interesting when they began introducing the idea to identify psychopaths' before they were born. The psycopath gene and genius gene was quite interesting but it just went downhill again.
Episode 2 on the other hand was great! I loved watching that kid and his past, the fact that he scratched his own arm just to control his irritation to others was great. then again it began going down and I nearly dropped the show like 5 times. Ep 3 was mid.
Episode 4 was incredible! the 7 deadly sin's part was genius, I never would have thought of that. The whole news broadcast in ep 4 was perfection, I would rewatch that episode alone. Then again the rest was just pathetic and messy.
after episode 4 the rest was unbareable. I HATE Bong Yi will all my heart. She irritates me beyond words. she was unbearable, I hate characters like her.
Sung Yo Han totally saved the show for me. Definitely my fave character, The second they killed him I knew this show would be crap. The whole brain surgery thing was where I almost gave up entirely.
Even though I hate it, I will finish the show because I have dignity. If by some chance I end up likin the rest of the show I will update my review and change my rating but at this point, I wont be able to rate in higher than a 5. I adore thriller and crime mystery drama but this one is just not for me,

edit: Oh my god!! I am so happy i decided to continue. the plot twist in ep 14 was pure GOLD. who wrote this script?? some sort of mastermind probably. My rating went up from 5 to 7.5. Amazing