Someji’s brutal murder is investigated.Among the visitors were Tanzawa Michiki the archaeologist, Masuko Fumie, an art school graduate who is knowledgeable about Japanese monsters, Someji the deceased documentary reporter/historian knowledgeable about Tokugawa's buried treasure and Hajime, a fledgling reporter who travels across the country for monster stories. Heiji was invited as a last minute resort because Kogoro and Kudo Shinichi are unavailable.