The Nightingale's Sabbat

Long ago, the greatest wizards and sorcerers, known as the Thirteen Firsts, created New Avalon, hidden from the eyes of ordinary people. Only they are capable of destroying it. Demi Lawrence and her friends think that dark times are far behind, but terrible secrets will return with the 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, chivalric 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 achieve victory in the decisive battle against fate itself? Or will they perish, as once it was foretold? In the castle, a nightingale cries — this is a call to the nightingale's sabbat.