The reason you should give this a watch is for an outstanding female antagonist unlike anyone you have ever seen before. Song Yoon Ah who played Choi Yoo Jin is truly remarkable and her character has so much depth that she deservedly outshines everyone in this drama and beyond. I couldn't help but empathize with her throughout the story due to her emotive acting and was constantly rooting for her even though she was the main antagonist.

Things I liked:
- Best female antagonist (unbelievably, she wasn't even nominated for Best Actress at Baeksang Art Awards)
- Fast paced screenplay
- Good action choreography (over the top but enjoyable)

Things I didn't like:
- Few implausible events in the plot