First 10 episodes were very good and kept me wanting to watch. Then starting with episode 11, the story line got ridiculous and got borderline illogical. This is something I have noticed with many K-Drama series I have watched. Many have 16 episodes and it appears many of them could have ended with 12 or 13 episodes (and then it would have been great). But with 16 episodes, the writers are asked to put in twists or wrinkles into the main story line to stretch out to 16 episodes and it surely starts to lose its steam. Of course, I have already invested much time watching so will continue to watch until the end. But in this particular series, I got frustrated and upset in the way the writers subjected us to illogical sequences in its storyline after episode 10. I am still giving a high rating only because the first 10 episodes were enticing.