Police Force of Echoes of the Abyss

A series of bizarre murders occurred in the bustling city "Haicheng". The victims were all ordinary citizens who had no connection with each other. The only thing they had in common was that a white dove drawn with the blood of the deceased and a string of unknown numerical codes were left at the scene. The case was handled with professional techniques and strong anti-investigation capabilities. The criminal investigation detachment of the Municipal Bureau was helpless and reached a deadlock, causing public outcry.