\nFrom the author of Strange Pictures and a bestselling mystery-horror phenomenon in Japan --mysterious spaces, trap doors, windowless children's rooms . . . something is wrong with this house. Can you solve the mystery of its floor plan?\n \nA writer fascinated by the macabre is approached by an acquaintance who is considering purchasing a second-hand house in Tokyo. With its bright and spacious interior, the home seems perfect. But looking closer, the building's floor plan reveals a mysterious dead space hidden between the walls. Seeking a second opinion, the writer shares the floor plan with an architect friend only to discover more strange spaces dotted across the house.\n \nWhat are these mysterious strange spaces and why do they exist--are they really there, or is there something off with the floor plan? Who is the home's former resident who suddenly disappeared?\n \nThe freelance writer and his architect friend can't resist the challenge of solving the riddle of these puzzling floor plans . . . and the terrifying plot behind it all.\n \nTranslated from the Japanese by Jim Rion\n