Something that frustrates me about a lot of K-dramas is when they create over-the-top, detestable, evil villains that you love to hate, and in the end, they barely get any punishment. Worst of all, the protagonist actually ends up forgiving them in the end.

Well, you don't have to worry about that here. The show gives you lots of real hateful villains, and thankfully they pretty much all get their just deserts in the end.

Another good thing about this show is that it's really addictive and bingeable. It moves along and keeps you watching.

Now for the bad. The characters and situations are very cartoonish. The villains don't seem very human, and you can't relate to them at all, because there seems to be no motivation for all their psychotic sadism.

And at the center of it all, Song Hye-kyo makes for a pretty weak main actress. She was a cold fish. I never felt any anger or intensity from her at all. Even those PTSD scenes I thought were kind of awkward and not well done. I wasn't too impressed with Lee Do-hyun either. Both of these leads were pretty bland.

Also, there were long stretches when not much happened. They could have shortened the series by maybe 4 episodes, and it would have fit the plot much more economically.

Overall, it was fairly entertaining, but I'm not going to remember much about it in a month or 2.