This is a review of season one. The story line is fast paced and keeps your interest with tension. The production values are better than average for a Korean TV series, with the exception of the then, trendy, camera jerkiness which is horrible at times. Don't expect the production values to be as good as a movie.
There are the typical plot holes, but the show moves fast enough you can mostly ignore them. It is amazing to me that still, in 2020, most Korean shows never admit the ability to track a cell phone for location or recent calls after a bad guy or phone number has been identified. Regardless, I didn't mark this 2009 show down for that omission because my review is in comparison with other Asian dramas.
The show is well written enough that I couldn't always tell what was going to happen next, which I really enjoyed. Most shows follow pretty standard plot lines and this one follows a common overall plot arch, but the details were often difficult to predict, especially early in the show. Later in the show it becomes more formulaic.
The main characters aren't the best actors in the world, but they had chemistry with each other and with others, so that worked well.
SPOILER ALERT!
I have to admit that I was disappointed in the tragic ending which I assumed was a vehicle to pull the female lead back into the spy agency. But, turns out that is not the case. So, just another Asian drama with a tragic ending.
I am usually very analytical (an engineer by education), but I generally want my shows to lift me up at the end, so that is entirely emotional and I did not enjoy the ending.
I just want to mention that Season Two is mostly new characters, weaker writing and weaker production values. It starts roughly 3 years after season one.
