The rain lashed against the library windows. Professor Elmwood lay slumped over his desk. A single candle flickered, casting eerie shadows. He reread the note, his brow furrowed in shock. The words "Your secret is safe with no one" burned in his mind. Detective Harding pushed open the heavy wooden door. The scent of dust and old books hung in the air. A shiver ran down his spine; something was wrong. The window was the only light in the darkened room. The bookshelf behind the professor had been knocked over.