On the Double Ninth Festival, Lin Jin, daughter of the prime minister, uses a visit to Guangming Temple to climb the heights and pay respects to her ancestors as an excuse to discuss a new autopsy method with her mentor. But when a headless woman’s corpse is discovered in the temple’s back courtyard, Lin Jin is mistaken for the murderer. To clear her name and uncover the truth, she launches a series of investigations with Xiao Yao, a junior official at the Court of Judicial Review. The cases are tangled and baffling, gradually leading them to several long-forgotten crimes. As they solve them, Lin Jin and Xiao Yao are drawn into even more serial murders. Crows, the Heart Bridge, twin flowers, a living coffin, the Eighteen Hells: each bloody case conceals countless secrets, and all of them point to the same conspiracy…