Silent Reading. Volume 3. Macbeth

In a car accident, a famous businessman dies by chance, and the police have no reason to start an investigation, but soon his eldest son is taken hostage. The kidnappers immediately start blackmailing the family, threatening to reveal some dark secrets... At first glance, these two cases should be connected, but why would the same criminal present the first as an accident and draw maximum attention to the second? Could someone else be involved? Finding answers to these questions falls to Lo Wenchou's team along with Fei Du, who has become an intern at the municipal administration, pursuing his own goals.