On a stormy night, a right arm reduced to bone turns up on the riverbank. Forensic pathologist Su Mi frowns at the database match: "The victim was declared a suicide three years ago. The case was closed."
The head of the criminal investigation team, Lu Chen, stares at her. "Either the database is wrong, or three years ago we buried the wrong person."
A second body part turns up in an abandoned laboratory, sealed inside a waterproof bag printed with chemical formulas.
When every clue points to the victim's wealthy husband, Su Mi discovers an even more horrifying truth under the microscope: the growth lines on the humerus show that the owner of this arm should never have appeared in the rich man's medical records.
