This is a brilliant Korean thriller that will have you sitting on the edge of your seat—possibly literally! While it has very good writing, it’s the performances—especially from Lee Joon Gi (Do Hyun Soo) and Moon Chae Won (Cha Ji Won) that truly captivates the viewer. I am not sure I’ve seen two performers dig so deeply into their feelings and emotions, and I believe that a big reason for this is their obvious chemistry. If I didn’t know that these two were acting in a show, I’d have sworn that these two truly love each other. That is how believable they are. Now, I have seen other performances that come close, but these two may be the best I’ve ever seen in 45+ years of watching movies and shows. It also depicts the worst parents I have ever seen in all of my years. Man Woo Baek and Mi Ja Gong are unconscionable. I really don’t care if it’s their son. To knowingly help a man kill other people is absolutely no excuse. None. And I had absolutely zero sympathy for such deplorable people who turned out to be as monstrous and sick as their son.

Do Hyun Soo is a man living with a horrific past. The son of a serial killer, Do Hyun Soo is diagnosed with Anti-Social Disorder. However, after reading up extensively on Anti-Social Disorder, I will argue that he is misdiagnosed. Given the lack of empathy, prone to violence, and especially substance abuse, Do Hyun Soo doesn’t really fit the bill. I believe that due an obvious lack of love, affection, and the ability to simply interact with others, he’s more like someone who has simply cut off that part of him that is capable of those feelings. That is, until something—or someone—provokes a response. He’s unable to identify various feelings, but that doesn’t mean that he doesn’t have them. It’s clear in his smile, his warmth, and also his love, that he’s more than capable of those feelings. He’s simply like a foreigner who can’t read or identify things. His character is captivating, harrowing, and heartbreaking. And the absolute anguish that he feels when he believes this Ji Won is dead, was raw, powerful, and conveyed everything I knew I would feel as well.

Now, the best thriller I’ve ever seen is “Stranger” which was a show a bit more taut and well-written than this one. It also deftly depicts a man who is incapable of empathy in Hwang Shi-Mok, and that actor gave a very real and stellar performance of such a person. And while Hwang Shi-Mok wasn’t diagnosed with Anti-Social Disorder, he’s much closer to being someone with that disorder than Do Hyun Soo. You really have to take into consideration the amount of abuse and trauma that Do Hyun Soo undergoes in his life to truly grasp what a person might be like coming out the other side of it.

Cha Ji Won may be my favorite female TV character of all-time. I’m not joking either. Now, it may be due to personal bias, because she encapsulates everything that a woman should be—to me, anyway. She’s strong, fiercely loyal, dependable, loving, compassionate, dedicated, and someone who is everything any man would ever want in a companion. I don't know how any sane man would ever let her go. My only issue with Ji Won is in how the writers depicted her as a police officer. Frankly, Doona Bae was far superior because she was smart, competent and held her own with anyone. Here, we find out that:

Ji Won is a terrible driver, allowing a cab driver to knock her car off the road by throwing the meter against her windshield?! Come on! Any seasoned cop would never react that way because they are trained to deal with those kinds of situations. Now, if she’d been forced off the road, that would have been believable.

Ji Won leaves a suspect alone. Now, she actually does get chewed out for that one, but it’s still a very big “rookie” mistake that someone like her isn’t likely to make.

Ji Won can’t remember Do Hae Soo despite meeting and speaking with her not long ago? Police officers are trained to remember faces. That one made no sense.

Ji Won is unable to secure a suspect. Another rookie mistake when she lets Yum Sang Chil escape and nearly kill her. Again, she doesn’t follow standard police protocol.

In episode 15, it made no sense that Ji Won wouldn't answer her phone. She knows her husband is out there and that he might try to contact her. This was another mistake on the writer's part in order to make the plot work.

I’ve said it before: never sacrifice character for the sake of the plot. The only big vice I have with the series is at the end of episode 13 when Ji Won suddenly suspects her husband of killing the housekeeper. Now, I understand that Do Hyun Soo doesn’t help his case by not telling her the truth, but Ji Won has already been through several of these scenarios, and she’s always realized that her husband isn’t capable of murder—until now? Plus, Ji Won never bothers to ask herself—what motive would Do Hyun Soo have to kill the housekeeper? None of it makes sense, and frankly, I felt deeply for Do Hyun Soo when he cries out in disbelief, “How do you not believe me? How do you not trust me?” Now, I know this was done to for the sake of the plot, but it was also a mistake because now you’re sacrificing character for plot. In other words, you’re making the character suddenly do something that goes against their character! For me, this is the only really glaring flaw of the series. “Stranger” and “My Name” had better scripts because they never deviated from or sacrificed character for the plot.

Now, the series is masterful in how it makes you suspect Do Hyun Soo for the first few episodes. You aren’t sure of what to make of him. This was genius! Then, you began to wonder, who is the “other accomplice” in the next set of episodes. And finally, you wonder how they are—not only going to catch the accomplice but do so where Do Hyun Soo is not only exonerated but can finally live a real life.

Outside of “24”’s Jack Bauer, I can’t think of another TV character who’s put through so much suffering and torment. Jack gives his all for his country, and Do Hyun Soo gives everything for his family. And perhaps that is also why I wasn’t entirely enamored with the ending. First of all, using the whole “killer grabs the policeman’s gun” ploy is a plot device that has been overused so many times in so many movies and shows, it should literally be retired and never used again! And I didn’t like the gimmick it used to suddenly rob Do Hyun Soo of his memory. How much more does this guy—and Cha Ji Won too!- -have to endure?! It felt like one step too many. However, the writers did their best to give us “hope” for Do Hyun Soo, that he might ultimately learn how to love his wife and daughter again. Except for Jim and Pam from "The Office" I don't think I ever cheered so hard for an on-screen couple more than these two!

This series is unforgettable. There’s no question that once you start, you can’t stop. It also has unforgettable songs and music—the track “Flower of Evil” is something that I’ve listened to so many times, that it’s literally in my head when I go to sleep. Don’t get me wrong. Despite the few issues that I have with this series, it’s still a great watch! And if I could ever personally meet Lee Joon Gi—and Moon Chae Won especially—I would give them my utmost thanks for giving us one of the best “couple” performances I’ve ever had the pleasure to watch. When they smile, you smile. And when they begin to shed tears, you can’t help shedding a few yourself. That is what true art as an actor is: making us feel what you feel. I will look for these two in future shows to watch!