Qin Feng is a loan officer at Qingshan County Rural Commercial Bank. His daily job is to collect loans, check credit reports, and write reports. His only pastime is writing suspense novels late at night - he has an unusual ability: as long as he has enough information, he can reconstruct the entire crime scene in his mind, as if he has witnessed every move of the murderer.
He originally thought that this ability would only appear in fictional stories. Until a drowning case was placed in front of him - the deceased was very good at water, and the place where he fell into the river was the only way he would pass every day. Although his blood alcohol concentration was high, his wife said that he had not drank at all that day. The police characterized it as an accident, but what Qin Feng saw were traces left by the murderer. He couldn't help but tell his reasoning to the criminal police captain who was handling the case, and he was drawn into a bottomless vortex.
The clues begin to extend from the first floating corpse fished out of the Qinghe River - the secret funds in the building materials city, the mysterious remittances received by the cleaners every month, the list of instigators covering universities across the province, and the masked spies who have been lurking in banks for many years. Qin Feng gradually realized that what he was pursuing was no longer an isolated murder case, but an infiltration network established by foreign forces for twenty years. The other party also noticed his presence. A photo of him from college many years ago was sent to the task force. The hospital where his wife worked was poisoned, and someone sent him an email in the calmest tone:
"Mr. Qin Feng, I have long admired you."
