Ye Yu, 16, who was in his prime, died for no apparent reason in the hospital. His attending doctor thought it was homicide and chose to call the police. After the police intervened, the investigation was fruitless, but an anonymous email provided clues. Based on this email, the police solved the murder case and at the same time led to the mastermind of the whole thing.
Concept: There is ugliness in the world, but there is also beauty.