"The Scholar Who Walks the Night" is a South Korean television series that aired in 2015. It is based on a popular webtoon and combines elements of historical drama, romance, and fantasy. The story is set during the Joseon Dynasty and follows a young woman who disguises herself as a man to sell books. She encounters a mysterious scholar who is actually a vampire. The series explores themes of love, sacrifice, and the struggle between good and evil. It features a cast of characters, including royalty, scholars, and vampires, each contributing to the intricate plot. The show received positive reviews for its engaging storyline and production quality.