*Very minor and broad spoiler*

The first episode will draw you in immediately with its calm yet increasingly suspenseful atmosphere. It's not an easy series to describe so I'll keep it relatively short. Because the story has such a strong romantic baseline, I half expected it to overpower the crime and suspense as some series do. Fortunately, it was well balanced and it did not disappoint.

The only aspects that made it a bit less than for me was somewhere in the middle when the original flow started to feel rushed. The shifting of Baek Hee Sung's emotions was abrupt (even if there was a trigger) and since that shift, it became less and less believable. Mostly because it was followed by dramatic events clumped too closely together which caused some encounters to become a tad repetitive, and some plot holes to develop.

Nevertheless, this series will draw you in and keep you in enough suspense to want to keep watching in lieu of sleep. I think it's a great one for those who enjoy different genres inclusive of psychology, romance, crime, or mystery. While it isn't a masterpiece in any particular genre, it did equally well in all of it.