Flower of Evil started out REALLY strong, and hooked me in immediately. I watched the first 8 episodes in like two days, and I completed the whole drama in only four days. However, at the end half there started to be a lot of frustrations for me. The characters suddenly started to be really stupid and oblivious, like I can't believe it took the so called "detectives" so long to come to the most obvious of conclusions. To add, some of the characters acted in ways no sensible human being would ever act. Those scenes felt very frustrating and unrealistic. Also, there were some things at the end half of this that felt very unnecessary and cliche even, and the ending left a few open questions that were never really answered, which felt a bit disappointing.

However, despite the negative aspects that I mentioned, as a whole this drama is definitely worth the watch. All of the cast did a very good job, the OST songs were great, and the overall plot was very interesting and engaging. And I'm saying this as a person who very easily gets bored and loses focus in things. Flower of Evil kept my attention the whole time that I was watching it, which for me is impressive. I'd gladly recommend it.