After the System Vanished, I Became Criminals' Worst Nightmare

After falling from a building while investigating a case, Lu Bingzhao, a police detective in his original world, wakes up as a rookie detective in Jiangcheng, a parallel world. He is also bound to a "bizarre System" that only tells him how many clues are at a crime scene, never which ones matter.

In a strangulation case on a rainy night, the System says there are "12 clues," and he has to sift through floodwater for microscopic fibers. In a series of murders imitating famous paintings, it reports "15 clues," and he must connect traces of paint across three cities. With no golden finger to clear the way, he relies on painstaking searches and relentless interrogations. His partner, Ma Weidong, goes from grumbling that "the rookie should stay out of the way" to trusting him with a firm "we can't do this without you." The "cutting" lab reports from Su Rui in forensics become his most reliable evidence.

The main plot follows the hunt for a highly intelligent serial killer, while the side story charts his growing expertise in evidence collection and interrogation. A strand of hair in a locked room, a slip in a witness statement, old evidence from a cold case: he climbs step by step, following each clue. When the System goes from issuing frequent prompts to falling completely silent, Lu Bingzhao finally realizes that a true "nightmare for criminals" does not depend on a System's support. It comes from turning every crime scene investigation and every battle of wits in the interrogation room into instinct.

The spicy food stall in the old district still steams in the heat. He and Ma Weidong munch on buns and talk shop. The interrogation room lights stay on until dawn, and with a single inconsistency he tears through a killer's psychological defenses. No superpowers, just an unyielding spirit: watch a former rookie transform into someone who strikes fear into the hearts of psychopathic killers!