Edogawa Ranpo is recognized as the father of Japanese detective mystery novels. His works have both the rigorous conception of the "original style" and the fantasy of the "changed style". The cases are interlocking and highly suspenseful; the narrative is filled with a sense of monster and absurdity at all times, making people feel as if they have entered a twisted alien world and enjoy the beauty of horror. This has become a source of inspiration and material for various films, television and animation. This work is one of the representative full-length masterpieces, created in 1926.