The Comments Teach Me to Crack the Perfect Crime

The crime-analysis livestream of Lin Wei, a therapist specializing in criminal psychology, is invaded by a group of supposedly all-knowing viewers. They not only reveal details of cases that have not been made public, but also start teaching her how to solve perfect crimes, until one day a comment appears: “You’re the next victim.”

Lin Wei specializes in criminal psychology and analyzes real cases in her spare time on a livestreaming platform. She’s used to blurring out the bloody crime scenes and discussing only the killer’s psychological maze. Then, one day, a group of mysterious viewers floods her stream. Their gold-colored comments identify killers with pinpoint accuracy, reconstruct details of evidence never made public, and even connect serial cases that the police had not noticed.

At first, Lin Wei thinks it’s a prank or a leak by someone on the inside. But after she follows the comments’ suggestions and helps the police solve three cold cases, she discovers that among these “comment-section detectives” are real criminals, a retired detective, and even… a serial killer who evaded capture seven years ago.

The viewer with the codename “Mirror” always sends her crucial clues when she’s most confused, speaking with the calm air of someone instructing an apprentice. Then, during a copycat crime, the comments suddenly flood the screen: “He’s at the scene, watching your livestream.”

The police intervene urgently, and criminal investigation captain Gu Zheng forcibly shuts down the stream. But the backstage data reveals an even more terrifying truth: the IP address of the most active “comment-section mentor” points, every time, to… the crime scene.