Seven years ago, a girl mysteriously disappeared. The only thing left at the scene was an old eraser carved with an uncanny symbol. The cold case was sealed away.
Afterward, the same mysterious mark repeatedly appeared on evidence from a series of murders.
Bone caskets, torn letters, bizarre keepsakes: each volume centers on a separate murder case. Lu Heng leads the special investigation team, using physical evidence to expose the layers of deception laid by the killers.
One case after another is solved, but the old case in the western suburbs that runs through the entire book remains shrouded in mystery. The truth is hidden in every silent piece of evidence.
