The human heart is the most delicate chess game, every temptation is a disguise, and every approach hides a conspiracy. Shen Yan was once a top criminal profiler in the industry. However, due to a "perfectly solved" serial murder case three years ago, he witnessed innocent people being wronged and the real murderer walking free. He finally chose to retire and take over the used bookstore left by his father, completely cutting himself off from the past. He thought he would only spend the rest of his life surrounded by the fragrance of ink on the pages of books, but he did not expect that a well-planned "accident" would drag him back into the whirlpool of people's hearts again.
