If you're looking for a thriller that surprises you, Flower of Evil is ideal. I liked it so much, I freaked out so much, that it became one of my favorite dramas. The acting is wonderful, you really feel what the characters are going through. The script was very well written, there are no holes and all the pieces fit together perfectly. The OST is also beautiful and super striking. Apart from the chemistry between the main couple, which is the entire periodic table. Flower of Evil perfectly balanced suspense, action and romance. One of those dramas that you need to watch with a cup of chamomile tea by your side to stay calm. I highly recommend it!