Lin Yuan, the owner of a second-hand bookstore in Qiu Shan Town, a small coastal town, lived a life of isolation. Ten years ago, due to a mistake in his reasoning, his best friend was imprisoned and committed suicide. , The windows were closed, and the only key was in the pocket of the deceased. The scene was like a perfect secret room. The police initially determined that it was suicide. However, Chen Qiming's daughter Chen Wan firmly believed that her father could not commit suicide. She broke into Lin Yuan's bookstore soaking wet and slapped an old blood-stained book on the table. On the book, there was an amber sandwiched between the pages. A rare poisonous bee was sealed in the amber, and a note with Lin Yuan's old code name "Zhulong" written on it. Lin Yuan wanted to refuse, but he found a tiny scratch on the back of the amber, which was the secret message he and his best friend agreed on when they were young. No., And his best friend died in the fire seven years ago. The rain was getting heavier and heavier. Lin Yuan pushed open the door of the bookstore and walked towards the villa area shrouded in fog. He knew that this was not just a murder, but also a logical puzzle that had been laid out for ten years.
