这是宋慈遭遇到最恐怖的一次杀人事件，尸体一共二十个被人蓄意杀害，且挑战性的悬挂在大街之上，十年前就曾经有过类似的案子，骇人听闻，宋慈带着助手雨墨展开调查，并且向当年了解过案子的人请教，可案子还没有调查清楚，诡异的事情再次发生了，那二十七个尸体竟然无故自己燃烧起来灰飞烟灭。宋慈经过缜密调查发现和当年案子的关联所在。可就在这个时候宋慈忽然被人弄晕了带去了一个献祭台，里面站着的正是自己怀疑的对象耿知年，耿知年要将宋慈一起为波旬教献祭，宋慈性命危险的时候雨墨带人赶来了，正当要抓获耿知年的时候，耿知年竟然也无故自己燃烧起来，唯一的线索中断了。

为了抓住幕后的真凶，宋慈用计策引诱对方出来，让他惊讶万分的是那个人竟然是自己一直信任的雨墨....

This is the most horrific murder that Song Ci has ever encountered. A total of 20 corpses were deliberately killed and hung on the street in a challenging manner. Ten years ago, there was a similar case, which was appalling. Song Ci took his assistant Yu Mo to investigate, and asked people who knew about the case back then, but the case was not investigated clearly, and strange things happened again. The seven corpses burned themselves to ashes for no reason. After careful investigation, Song Ci discovered the connection with the case that year. But at this time, Song Ci was suddenly fainted and taken to a sacrificial altar. Standing inside was the object of his suspicion, Geng Zhinian. Geng Zhinian wanted to sacrifice Song Ci to the Bo Xun Sect. The people from Modai arrived, and just as they were about to capture Geng Zhinian, Geng Zhinian also set himself on fire for no reason, and the only clue was interrupted

In order to catch the real culprit behind the scenes, Song Ci used tricks to lure him out. Trusted Rain Ink....