Finally...an excellent drama for 2016. The writing and directing is above par. I am not into detective dramas, but this is an entirely different level. It is one of the better time travel (although no one actually physically time traveled) dramas I have ever seen. The story flows at pace that is exciting and suspenseful. The characters are smart, courageous, and I was fully invested in the outcome of their lives. The directing is gritty and so real that everything seemed plausible. I enjoyed the journey of criminal investigation. I watched this because of my love of Lee Je Hoon and he did not disappoint as Park Hae Yeong. I felt like he was emotionally involved in the life of Park Hae Yeong. That is the best kind of acting. Kim Hye Soo beautifully portrayed a woman who is strong and passionate as Cha Soo Hyun. Then there is Jo Jin Woong as Lee Jae Han...It s hard to know where to start when talking about this actor. I have seen him in a few other things and I thought he was good then. I fell in love with him in this drama. I was cheering for him from the beginning. Whatever emotion he presented flowed through me and I would find myself angry, crying, or smiling with him. It has been a while since I felt this way about a group of actors. The music is excellent. It fits well with the story and the action taking place. I will probably rewatch this at some point. I recommend this drama to everyone no matter which genre you prefer.