The police found that the method of committing the murder, the layout of the scene, and even the state of death of the deceased were exactly the same as those described in Gu Yan's never-published manuscript "Echoes of the Abyss" that only existed on his personal computer. The person in charge of the case was Lin Lan, the experienced but unruly criminal police captain. She immediately identified Gu Yan as the number one suspect.
