This series got started in a very interesting note. But after a few episodes the twist was pretty clear to me. ( Personally). One may find this edge of the seat thriller if they don't find out or predict the twist.
Han So Hee has done a fantastic job doing the action sequences. I was introduced to Han So Hee through her cameo in " 100 Days my prince and then " World of the married ". In this one, she was in a completely new, bold , raw, savage avatar. Was Smitten by her beauty previously but in this one , oh boy the action scenes were damn great and treat to the eyes. Soundtracks are pretty decent. I think it a must watch and binge worthy series for action lovers.