The Sixth Wall: the Old Case of Yunque

After his father fell to his death from the Yunque Building, structural engineer Lin Yanqiu received an anonymous blueprint: the building revealed three underground floors, but hid a non-existent fourth floor. Shoe prints in the wet mortar, mutual tombstones, sealed medical records and a string of unconnected numbers brought her back to the accident that was buried fifteen years ago. She and investigative reporter Zhou Ye followed the vertical axis that ran through the floors, and between the truth and family ties, they retrieved the names written on the wall.