9/10 is my rating. This is a 2020 South Korean television drama with 16, 60 minute episodes.

Cha Ji-won (Moon Chae-won) is an insightful detective who often sees aspects of cases even her sunbaes miss. She seems to have the perfect life, a handsome and attentive husband, a job she excels at, and a lively young daughter. Her husband, Hee-sung (Lee Joon-gi) is very secretive about his past, he is a metal craftsman so can keep hours as he chooses. He also has a sound proof shop perfect for hiding the loud sounds of metal working and other sounds if needed. Cha Ji-won and her team begin to investigate a string of murders that look suspiciously like copy cat murders from crimes that happened 18 years previously. The more she observes the behavior of the psychotic and sociopathic behaviors of the criminals she arrests the more curious she becomes about some of the behaviors she notices of her own husband. He also has been around victims and suspects they are investigating. It has piqued her detective senses and she is not sure what to believe. Does she believe in the kind and loving husband and father or dig deeper into the past he is so secretive about to determine if he is actually a sociopath skilled at hiding a duality containing a much darker side.

Spoiler alert ** I really don't know how to describe this beyond just masterful. One of the most suspenseful and interesting serial crime dramas I have ever seen. The romance is amazing as well. In the early part of the drama you are led to believe that the ML may be evil. His father was a serial killer and they are playing up the nature aspect of serial killer - get you thinking maybe he is just like his father. As the show progresses we get to see more of how he really is and, if you know anything about sociopaths and/or psychopaths he shows emotion that would not be possible if he were what he thinks he is. It reminded me, in that sense, of Psychopath Diaries, how a label can become an expectation. He lives a lot of his life under that stigma and expectation of himself. The FL is a very intelligent detective and has a lot of integrity as a police officer. I get how you might have some doubts as you saw stuff that seemed to point at one person, but it was disappointing how easily she believed badly of the ML. Then she comes around, or so it seems, until just a short while later when another thing happens and she, once again, believes the worst of him. His sister, who knew him about as long as his wife, steadfastly did not believe him capable of anything psychotic. It also did not make sense, to me, that she would trust her sister-in-law, who she knew had murdered, with her child yet so quickly jump to distrust with her husband. The reporter, it was nearly unforgivable the way he treated the ML back in the village. He did redeem himself in all the help he gave the ML later though and, given the ML basically kidnapped and tortured him they were pretty much even. I wish the "mother" had grown to love her adopted son and protected him more. It seemed cold the way they treated him after the real son woke up. I know that there can be a stigma with children of criminals, particularly killers as society has not drawn a conclusion on whether, or not, mental disorder, such as that are inherited. The little girl was so adorable I wanted to see, when he approached her after losing his memory, that his love for her was strong enough to give him full recollection. So it was overall a really great story and kept me engaged the whole way through with just some, relatively minor, inconsistent plot points, and storylines that did not completely wrap up. For instance, what happened with the guy that went crazy because he couldn't find his wife. Now that his wife was discovered alive did they talk? Just a few unresolved aspects. I highly recommend for anyone that loves crime dramas, serial killers or just complex love stories.