The Mystery of the Secret Room on a Rainy Night

The ringing of the phone broke the silence. Lin Yu frowned, put down the book in his hand, and picked up the phone. Officer Zhang's anxious voice came from the other end of the phone: "Lin Yu, something big happened. Come to the secret room murder scene in Chengnan District. The situation is very difficult." Without saying a word, Lin Yu put on a long black windbreaker, grabbed the hat on the table and went out.