About the book: 2023 / An inexplicable phenomenon occurred in this detective story. On an ordinary morning, the girl went to school. She passed by a construction site. But suddenly screams were heard, the girl raised her head and saw a stone flying straight at her. She couldn't move from fear. When the builders went down, they found no one. How did the girl manage to escape? Then similar events began to occur, but the girl continued to mysteriously disappear. In order to find out what is happening to their daughter, the parents hire a detective to help solve this mystery..