The Nancheng Family's Spirit-Summoning: The Seventh Shadow of My Late Wife

Synopsis: Retired real estate developer Nancheng Yilang has only one wish left in life: to atone to his wife, Zhinao, who fell to her death three years ago. His eldest son, Yajie, invites the medium Tsukuyomi Ling to hold a "seance for his late wife" at home. Toru Himuro, a scholar of paranormal phenomena, hears about it and arrives with electromagnetic detectors and infrared cameras, determined to expose the hoax. On the eve of the seance, Nancheng Yilang is found dead in another room, the "Chamber of Repentance." The door is bolted from the inside, the key is beneath the victim's pillow, and the windows are nailed shut from within. Outside the only entrance, Yajie and Tsukuyomi Ling can vouch for each other's whereabouts. The blunt weapon is Zhinao's bronze mirror stand, which bears only Yilang's fingerprints. The medium claims that an "evil spirit in the mirror" haunts the Nancheng family, and that a seance must be held at 3:17 a.m. to seal the spirit inside the mirror chamber. At the seance, everyone sits in a circle holding hands. The door is locked from the outside, and the key is placed on the spirit board in the center of the round table. When the candles go out and are relit, a second body appears: the eldest son, Yajie, with a demon-slaying sword plunged into his chest, while the key remains where it was. Toru Himuro realizes that the locked-room mystery is not a matter of physical space, but of "memory": every member of the Nancheng family has erased the same memory of Zhinao's death three years ago. As the seance reaches 3:17 a.m., the sealed "seventh shadow" steps out of the mirror.