Ping County, a small border town where criminal impulses quietly fester. As unprecedented and baffling crimes unfold one after another, tough-as-nails captain Song Qi, cold-faced forensic doctor Wang Qian, and investigator Li Jing are forced to work together. Bones can speak, traces can point the way, but the human heart is unfathomable. What they gradually uncover are the shocking secrets hidden in case after case.
When darkness swallows the light, the only people they can trust are one another.
