A string of young women are murdered across the country, but the crime scenes yield few clues. Old photographs become the key to the case, yet Captain Liu of the Public Security Bureau and Mai Tao have no idea where to start. Seth Waller, a Chinese American agent, returns to the country to join the investigation and draws on his expertise to dig deeper. Behind the cases lie unscrupulous hospitals, unethical business owners, tangled relationships, and even Mai Tao's own involvement. Suspenseful and tense, the story follows Seth through layers of confusion as he pursues the truth. By continually analyzing the cases, he exposes the darkness and complex human nature hidden beneath them.