When Lin Xudong received the message, he was dealing with a manslaughter case.
The offender's wife, Deng Mou, was having an affair with a guy surnamed Zhu. When found in bed together by her husband, the Zhang-surnamed guy, he and two of his friends beat Zhu up, leaving him severely injured. Despite medical treatment, Zhu only survived a few hours.
Things got interesting next.
The Zhang-surnamed guy, apparently not loyal to his friends, kept insisting that he had only hit Zhu once, and that his friends were responsible for the rest, including the fatal blow to the head.
The three men quickly began to quarrel.
Making an accurate judgement in such a case is extremely difficult, as all three jointly committed the assault. It's hard to determine who hit harder and who caused Zhu's death.
During the interrogation, Lin Xudong felt his head ache and he thought of Zhao Yi again.
Zhao Yi can identify liars!