Thisingeniously constructed masterpiece, written by one of Japan's most celebrated crime writers and translated into English for the first time, is perfect for locked-room mystery fans who can?t resist a breathtaking conclusion. In the Chizurui family mansion, a haunting presence casts a shadow over its residents. By night, an eerie figure, clad in a sinister Hannya mask is seen roaming around the house. An amateur murder mystery writer, Akimitsu Takagi, is sent to investigate ? but his investigation takes a harrowing turn as tragedy strikes the Chizurui family. Within the confines of a locked study, the head of the family is found dead, with only an ominous Hannya mask lying on the floor by his side and the lingering scent of jasmine in the air as clues to his mysterious murder.