Li Bi arrives at He Zhizheng’s mansion to find it eerily quiet. Unbeknown to Li Bi, all the servants at the mansion have died in mysterious circumstances in the firewood shed. With no news from Li Bi after an extended wait, Tan Qi makes a daring attempt to lie her way into the Yourao Regiment to rescue Zhang Xiaojing. Zhang Xiaojing devises a plan to burn down the barracks of the Yourao Regiment to create an opportunity for the three of them to escape. They run into Cui Qi as they head to the exit, and are surrounded.
李必赶到何执正宅，此时何宅中却出现异状，所有的家仆都离奇的死在一间柴房内，但李必却并不知情。檀棋久候李必消息不至，冒险靠骗术闯入右骁卫营救张小敬。张小敬用计烧毁了右骁卫官衙，为三人赢得逃脱的机会，但就在将要逃出大门之际，三人被崔器撞见，遭重兵包围。李必在柴房中醒来，尸体堆中忽然有一只手向他袭来，尚未断气者是太子派到何执正府中的典药官，典药官告诉了李必一个惊人的秘密。
