This drama is definitely one of my favorite dramas! The story, acting, cast, OST, everything about it is amazing. It's a good first drama, I introduced a friend to k-dramas through this and she absolutely loved it! It can hold your attention, leaving you in suspense, and always making you want to watch the next episode. Lee Joon Gi's acting is on point! (like always ;)) He's always been the best actor I've ever seen, and this just makes him seem even better. 10/10 recommend! You won't regret it!