Lan's Devotion

Shanghai, 1951. Zhang Yulan, a former prostitute who had been liberated, was murdered while receiving treatment in a hospital. The killer, however, surrendered on the spot, still holding the murder weapon. What seemed like a simple murder case led to two serial murder cases from the Republican era, separated by ten years. As the cases were reopened, more and more clues came to light. Yet the killer's identity grew ever more elusive. A detective from twenty years ago, now in the twilight of his life, crosses paths with fate once more. Can he solve the case that eluded him twenty years ago? And is the truth behind it worth revealing?