The acting of this is off the charts. So incredible every single actor did their part successfully but I have to highlight Oh injoo firstly wow the actress killed this role. her acting is the best thing I've seen this entire year, her microexpressions were on point and makes the whole series believable like after watching this I feel like I should be concerned about her because she was so immersed in her role. Secondly, I have to give kudos to park jae-sang, he absolutely kills roles like these. I wish more of the little scared man dynamic was shown more. but wow really good. my only problem was with how much plot twist there were in such a little time, the should have made the beginning more fast paced so the last few episodes didn't feel so rushed and confusing