The concept of this drama was interesting enough, but it didn't quite succeeded on getting it through till the end. One of the positives of this drama was the fact that it had mini cases in each episode, like the background story of the ghosts. Plus, the pace was fast, and it didn't drag along at the last few episodes, though the final one was not that good. As for the romance, it was okay, and they did find a way to make it work (in K dramas they always do!!). However, the ghost stories didn't blend smoothly enough with the main story, which was a little like a replica of Oh my ghost (especially the evil spirit situation). The performances were okay and the action was really entertaining, so, for that, 7 out of 10.