If you're looking for something to keep you on the edge of your seat with twists and turns this is the one for you! There were so many scenes and times that my heart was beating so fast for the main character and watching the mystery unravel had my jaw on the floor. This drama is half police/detective, the other half a criminal trying to hide his secret from the people he cares about most. Very good mystery and I couldn't see the ending coming at all.

-- Spoilers Below --

Lee Joon Gi does such a good job at playing Do Hyun Su and bringing his character to life. Hyun Su suffers from a personality disorder where he doesn't feel any emotion and is diagnosed young in life after news breaks that his father is a serial killer. He's running from the cops and has been for years due to the village leader being found murdered and him being the only person to blame. His wife is a detective with the police and hiding his secret is the biggest thing in his life. While spending time in his workshop, he learns that murders are starting up again and that the killer is looking for him. He begins playing a game of cat and mouse with this killer, trying to figure out who helped his dad commit his crimes. Eventually, it comes to light that Hyun Su is living out his life as Baek Hee Seong, due to being involved in a car crash and the family taking him in. Everything slowly unravels getting closer to the end as he reunites with his sister and they begin to search their minds for the accomplices face. Hyun Su over the course of the show realizes that he actually does have feelings towards his wife and their daughter and cannot live without them.

Ji Won, or Detective Cha, started to notice things were off with her husband pretty early on into the show. She puts a GPS on his watch that she finds after a scuffle with "Hyun Su" and follows his every move without him knowing. While following him, she realizes that he is indeed Hyun Su after overhearing a conversation between him and his sister. She begins to help him live out his life as Baek Hee for the sake of their daughter and helps divert police attention to others. Detective Cha even helps him at moments where she'll give him information without letting it be known that she knows who he really is. She struggles with wanting to love him for him, but hate him because she thinks he's a murderer. There were a few points in the show where I found it super hard to like her, but towards the end she becomes more likable as she learns and realizes that Hyun Su isn't all he was made out to be all these years.

My faults with this are that it moves in a pretty fast pace with Detective Cha learning her husband's identity pretty early. An upside to this drama is while I thought I had figured out the twist, I had guessed wrong and I feel like it really catches you off guard when it's revealed. Learning that the real Baek Hee is evil and a psychopath, and was actually their dad's accomplice was something I never saw coming. I had originally guessed that it was Baek Hee's father who helped. There were many twists in the story, another being Hyun Su had never killed anyone at all. He had actually been covering up for his little sister who had been attacked and killed the village leader in self-defense, but because their father had just been outed as a serial killer felt nobody would believe a word they said. I wish that the show had went more into the exorcisms the village had forced on Hyun Su and how much this affected his mind and emotions. It played a huge part in his and his sister's secret (being that she killed the village chief after trying to confront him to stop the exorcisms) you don't get much info or flashbacks to them. Even the mystery about his mom going missing and leaving the tape was a huge plot point that didn't get answered or tied up fully.

I rated everything a 10 besides the rewatch value because personally, I think once you know the twists that it wouldn't hit as much or hard as it does the first time without knowing! I still think you could get a good rewatch in if you really loved the characters.

Overall, the ending of the show helped make it a little better for me. I was worried that Ji Won was going to be hard-headed and that Hyun Su wouldn't realize that he can emotionally feel things and care towards people. The ending with him crying and seeing his daughter was a happy solution to this wild adventure.