This film is Dreyer's first audio film, a classic horror film, and more psychologically shocking than modern horror films. The film is famous for creating atmosphere, filled with dreams and weirdness. The story is about a young man who feels surrounded by zombies and fantasizes about being buried in a grave. The film uses a lot of novel shooting angles to create a unique image effect, and through hinting techniques to show the power of evil, has made unprecedented achievements, raising the horror type film to the height of art film.