This novel takes suspense as its core, and through the occurrence and detection of a series of bizarre cases, it deeply explores the complexity of human nature, the contest between justice and evil, and the concealment and emergence of the truth in the fog. It shows the protagonist's determination to stick to justice and never give up pursuing the truth when facing dark forces and complex puzzles. It also reveals the struggles and choices of people from all walks of life between interests, emotions and morality.