About the book: 2024 / Long ago, the most powerful magicians and wizards, called the First Thirteen, created New Avalon, hidden from the eyes of ordinary people. And only they are able to destroy it. It seems to Demi Lawrence and her friends that the dark times are far behind them, but terrible secrets will return along with ghosts and the first snow. The familiar world will fall, bowing before the power of the immortals. At the moment when the last ray of light fades, knightly legends will come to the rescue. About Arthur and Merlin, about the sleeping king under the mountain and about the old island of Avalon. Will the heroes be able to win the decisive battle with fate itself? Or will they die, as was once destined? A nightingale is crying in the castle - this is a call to Nightingale’s Sabbath.