This is a sprawling criminal investigation universe set in Binhai City, spanning tens of millions of words. Each volume focuses on a major case, ranging from dockside murders and campus cold cases to rural mysteries and cross-border manhunts, exploring the meeting of traditional detective work and modern investigative technology. It features gritty forensic details, from fingerprint collection and ballistic analysis to online tracking and psychological profiling, recreating the real process of solving cases; a richly drawn ensemble cast, including the aloof yet warmhearted Lin Mo, the intern Su Xiao as she grows from inexperienced rookie into a seasoned professional, and Lao Zhou, a veteran trace evidence examiner, each with their own stories and convictions; and profound explorations of human nature. The killers are not one-dimensional villains, and the victims are not necessarily entirely innocent. Betrayal and loyalty, darkness and light, clash and unfold with every case.