i give it 9.5/10. Thank goodness I found this drama. Thank you writers, directors and acting team for bringing us such a thrilling drama. I have binge-watch all episodes without having the agony to wait.
I give it 8.5 marks. After all, the story was written by a legend, Kim Eun Hee, who brought us both 'Signal' and 'Kingdom'. It is sort of confusing and unbelievable at times. However, when the ghost said her last words, it can be deep philosophy, inspiring and a food for thought. Hope to watch another Kim Eun Hee's drama soon.