I don't understand why the rating is 7.9, the drama was great - from the very beginning to the very end. Lee Joon-gi was outstanding as usual and I expected nothing less. He played his character the way I wanted him to - at its finest and doing his best during every minute of the episodes. This drama served as great entertainment with its magical effect and mystical plot twist. The music was great and made me feel the atmosphere better, it really contributed to the emotions you get while watching. G.NA did quite well! The one actor that also gave me chills with his extreme handsomeness and skills when it came to acting was Lee Soo-hyuk. I will check another drama or movie of him for sure! His facial expressions, his professional gait of a real model, his height and his voice are something worth watching. Did I mention his acting talent?! I was convinced after the first few minutes that this casting decision was a good one, as Soo-hyuk portrayed the dark Gwi role brilliantly. Fortunately, I haven't felt the drama drawn-out, but the acting of the main female role was from time to time, to explain it nicer, annoying or to be more accurate - I felt like Yu-bi was quite annoyed and upset, especially during the kissing scenes. If there are true Joon-gi fans here, they all know that the way he kisses in dramas can make you feel that he's in love with the person he's kissing. But the girls... There's no chemistry here like everywhere else he's playing with some exceptions. On the other hand, you can find chemistry between other characters but I don't want to spoil, the idea's to catch your attention after all. In addition to everything I wrote, the timeline was exclusively clear! It wasn't hard to tell whether it had been days or months or years that had passed since the last time a given character had been on screen. And I think this is very important when it comes to series. To sum up, Scholar Who Walks The Night is exciting, creative, dark and at the same time beautiful, magical and unique. It's well worth those 20 hours of your time!