Best Suspect

If you could kill one person without guilt, who would you kill? Your enemy? Someone who has disparaged you? A colleague you dislike? … The answer is horrifying to think about. ———— A male corpse was discovered in the Ping'an Town Activity Center. As the identity of the deceased became clear, the police discovered multiple suspects, including the deceased's wife, the deceased's father, the deceased's colleagues, and the parents of the deceased's son's classmates... Who is the real murderer?