Silent Control

One autumn morning, Zhang Yunning drank the pumpkin millet porridge cooked by his wife as usual and went to work. Three hours later, he collapsed in the conference room. The doctor said: acute myocardial infarction. After a police investigation, there was no evidence of homicide and the case was shelved. Ten years later, on the day Captain Zhao retired, he saw Lin Meng holding his daughter's hand at the school gate. He suddenly remembered something - the girl's age matched the time of Zhang Yunning's death. There is no evidence. There is no murderer. There is only a silent fog of doubt.