The first part (episode 1-6) I reviewed only 7/10, then I struggled to get past the first two episodes of Part 2, BUT since episode three everything became exciting, its like the drama suddenly got life.
It has a lot of twist and turns, and is difficult to know who is right or wrong at this point.

Mostly I like to watch the parts of Eun Som more than psycho Saya, but overall the story line got much better. At this point I have no idea how the plot can turn out and that is what is makes a good drama for me.
I give this Part 2 of this drama 9/10 for being unpredictable.

My low rate on re-watch isn't because of this drama, just in general I don't like re-watching any drams or movies.