The biggest issues I had with this show were with the storyline. The spy storyline moved pretty quickly in the first three quarters of the show, and it left me wondering how else the writer would fill out the remaining 4 episodes of the show. This resulted in the storyline slowing significantly in the final quarter of the show, and I even felt bored towards the end of the show. It also felt like the show didn't quite know what to do with the romance storyline in the show. There wasn't enough build-up in the romance to keep me invested in the relationship between the 2 main characters.

Ironically, it was the relationship between Park Sung-woong's and Park Hae-jin's character that felt the most rewarding and kept me the most invested.

This was a great cast and they acted the heck out of the script. It was so pleasant to watch Park Sung-woong act as a goofball, since he can most often be seen acting in serious roles (both good guys and villains). Kim Min-jung and Park Hae-jin are drama veterans so they definitely did a great job.

Still an entertaining watch overall.