"The magical adventure begun in The Bear and the Nightingale continues as brave Vasya, now a young woman, is forced to choose between marriage or life in a convent and instead flees her home--but soon finds herself called upon to help defend the city of Moscow when it comes under siege"--

Vasilisa's gift for seeing what others do not won her the attention of Morozko-- Frost, the winter demon. But Frost's aid comes at a cost, and her people have condemned her as a witch. Driven from her home, she faces an impossible choice: marriage or life in a convent. Instead she dresses herself as a boy and sets off astride her stallion Solovey. Prevailing in a skirmish with bandits, the Grand Prince of Moscow anoints her a hero for her exploits. She dares not reveal to the court that she is a girl, but soon she discovers a grave threat lying in wait for all of Moscow itself.

Reviewers called Katherine Arden's novels The Bear and the Nightingale and The Girl in the Tower "lyrical," "emotionally stirring," and "utterly bewitching." The Winternight Trilogy introduced an unforgettable heroine, Vasilisa Petrovna, a girl determined to forge her own path in a world that would rather lock her away. Her gifts and her courage have drawn the attention of Morozko, the winter-king, but it is too soon to know if this connection will prove a blessing or a curse.