I watched this a bit ago so I can’t remember much. This will be a short review. There are just a few questions from me. When was there ever a theory that you can be turned into a vampire by contaminated blood? What happened to the vampire aspect? They just focused on the detective part while just saying ‘oh yeah the mc can’t really die and was once hurt by sunlight but not anymore’ It was a quick watch to pass time, I wouldn’t really watch it again, and like a lot of k dramas the villain was a crazy woman with no objective except to get back together with her high school love who is now 80. Also, the show had no happy ending at all. Mc disappeared, a lot of people died, and it was all a setup for a season 2 that has never come. All in all if you need something to pass the time, it’s a quick watch, but I wouldn’t recommend it if you were looking for something focusing on vampires.