In a world where "memory materializes after death", in a series of murder cases, the contents of the Book of the Dead actually contradict the evidence at the scene - these books are lying spontaneously. As the only "book whisperer" who can talk to the remaining souls in the books, the protagonist discovers when tracing the truth: these books have not been tampered with, but have developed self-awareness, and they are actively protecting the murderer. And the protected murderer is the protagonist himself