I really enjoyed this dorama, I am glad I watched it. Finished it in a day without getting bored for even a second. The plot was well-thought. It had some minor flaws where it felt a little forced and I felt like the writer took an easy way out. But all these can be overlooked because the suspense and the mystery was really good. The actors were up to par, they were good but not exceptional. Same goes with the chemistry between characters. Perhaps the romance was not as believable as I hoped it would be. But I thought Matsushima managed a difficult role fairly well. The rewatch value is of course a bit low since it's a mystery but there are many scenes that I will definitely go back and watch at least once again. Overall, I thought it had amazing potential and it really left an impact on me, but at the end I feel like it did not live up to its potential. I was really undecided whether to give it an 8 or a 9, but at the end I chose 8.