Evgeniya Ovchinnikova is a popular children’s author, a three-time finalist of the “Kniguru” literary prize, whose jury includes teenage readers. A few years ago, Nina’s mother disappeared without a trace, and since then the girl has been living with that emptiness inside her. But one day she receives a mysterious SMS message— the sender asks her to delete it immediately. Nina begins her own investigation and tries to find out what they kept from her all these years. Written as a psychological detective story, the book puts not only the crime itself at the center, but the events around it and the relationships among the characters. If you want to help the heroine solve this secret, we invite you to listen to the audiobook.