The Warning Signal in the Dust Case

Fifteen years ago, the master's daughter died in the "Blue Bridge Case", and the real culprit was at large. Fifteen years later, a platinum earring that was supposed to be buried with her reappeared - the ghost was back. But this time, his knife is pointing inside us. I am Zhao Dagang, a criminal police officer from the Municipal Criminal Investigation Detachment. Fifteen years ago, I was still a rookie, following my master Wang Dayong to investigate the "Blue Bridge Case" that caused his life to collapse. The third victim was his only child, Queen Xiaoya. The murderer was like a ghost, leaving no effective clues. The only physical evidence was a platinum earring that the master had glimpsed, but it mysteriously disappeared during transfer. This case became an unsolved case and became a wound in the hearts of our masters and disciples that could not be healed for fifteen years. Until today, the appearance of a female corpse broke all this. When I found the platinum earring engraved with "WXY" in the crack of the floor, I knew that he was back. The master who had already retreated to the second line was alarmed, and our former partners joined hands again. But the murderer seems to be able to predict every move we make. The clues always break at key points, and invisible resistance keeps coming from within. When all signs point to within the force, trust begins to crumble. Master and I had to look at everyone around us while tracking down the ghost. This is a race against an invisible opponent, and it is also the ultimate test of fifteen years of faith and justice.