Rusted Sword, Bone Book: The Prisoner's Letter

A letter from a dying prisoner drags former tour leader Lu Zhizhao back into a century-old conspiracy. To prove his innocence, he must follow a trail of rusted weapons and bone-white manuscripts, decoding clues hidden in official records and forgotten correspondence. With Liu Qingwu, an orphaned archivist who reads between the lines, and Yan Guihong, an outlaw bodyguard with old scores, he uncovers the Mo Society's ruthless writing of history. But the society's elegant leader Nie Yunzhou watches every move, valuing secrets more than lives, while Shen Yan of the Shen family plays a double game to protect his clan. As Lu Zhizhao peels away layers of falsehood, he realizes the truth he seeks may also be his final trap.

狱中来信开启古局，领队陆知白以专业破百年冤案，对抗墨社清除真相。