Lu Zheng has been a police officer for thirteen years, handling countless cases, all neatly filed away in the cabinets.
There is only one file in disarray. It is the closing report for an old case from ten years ago. Key pages were deliberately destroyed, and the remaining sheets have ragged, torn edges. No one knows what was written on those pages, and no one asks. Lu Zheng never brings it up, so others don't dare ask. Only occasionally, someone notices that on rainy days, he feels a dull ache in the right side of his chest. The doctor says the old injury healed long ago and shouldn't hurt.
Then, one ordinary afternoon, someone who should have been listed as
