Flower of Evil is a thriller and at the same time a melodrama and this can bother some people but for me it was fine as I was really invested in the characters stories. For some people the scenes can be too emotional in the half of the drama but for me it made sense based on the things that was happening in the characters life.

Flower of Evil have a lot of positive things. First, the story about our main lead Hee Seong/Hyun Su is REALLY interesting and made me lose my mind the whole time. I was really curious to know more about these characters and what happened in their past and I couldn’t see plot holes in it, everything made sense for me. Even tho it was obvious for me that Hyun Su wasn’t the accomplice of the serial killer (because come on he’s main lead he couldn't be the villain) I still found the plot pretty interesting and exciting. The relationship between the main leads are awesome as well and the actors had a wonderful chemistry together. The OST was AMAZING too seriously I loved all songs and bgm. The acting was other thing that I loved and all actors did an amazing job here especially Joon Gi, who was fenomenal as usual, Chae Won, who was in the same steps as him, and the actor who did the serial killer, who was amazing too (and seriously hot lol). As I said, this drama have a lot of positive things and I was really addicted to it, I couldn't stop watch. The director certainly knew what he was doing here as almost all episodes were exciting and thrilling. It’s like you finish one episode and can’t move one without watching the next episode lol

The things I didn't liked about this drama was the characters actions in some episodes and the finale episode. First, Hyun Su not noticing that his wife figure out everything was no sense for me because PLEASE she is a police officer and was investigating his case, and on top of that she changed her attitude towards him out of nowhere so it's odd that he didn't noticed anything. And how do they leave their daughter with Hyun Su's sister without any protection from the police? The fact that they didn't think that the serial killer could go after them was ridiculous too. The last episode was one more thing that I didn’t enjoyed, I don't know it looked TOO forced. Memory loss it’s one of the worst things that can happen in a drama because most of the time only drag the plot and doesn't benefit the drama at all. And altought I think I know the reasons why the screenwriter put this on the drama, Hyun Su losing his memories was too random for me, seriously the end could have been way better. It was like EP15 was the finale episode, not the EP16.

But even with some flaws, I can totally understand why this drama was really popular last year and why its considered one of the best thrillers. It is really interesting and captivating and I totally recommend this if you like thriller because I think its almost impossible not like this one.