It was a great drama, kept me on the edge whole time about who big mouse is. It was unexpected. My first guess was that the main lead had split personality (which also would have been nice ). Honestly there were too many loose ends in the drama, so many things don't make sense. The most absurd one is miho getting stage four lukemia with one time exposure. She just coughed blood, fainted once and the next scene she died. Hyejin's death had no justice. The death of the big mouse didn't also make sense because he was shown as very powerful and informative all the time, so not checking up the place specially when his identity is exposed was kinda dumb. The drama mentioned the elder's psycopath son but he was not shown at all, The death of the inmate who took his fall also didn't have any justice. And for god's sake i get it that changho was playing a tough guy role but he really needed to show more emotions if his wife is dying, i mean c'mon? And the way doha died was unsatisfactory too, it was too rushed he deserved a bit more pain and suffering than that. Overall the suspense was nice the twist and turns were nice but i feel like it could have been better and took more time with the ending and not rush it.