Following their adventures in The Bear and the Nightingale and The Girl in the Tower, Vasya and Morozko return in this stunning conclusion to the bestselling Winternight Trilogy, battling enemies mortal and magical to save both Russias, the seen and the unseen.

Now Moscow has been struck by disaster. Its people are searching for answers—and for someone to blame. Vasya finds herself alone, beset on all sides. The Grand Prince is in a rage, choosing allies that will lead him on a path to war and ruin. A wicked demon returns, stronger than ever and determined to spread chaos. Caught at the center of the conflict is Vasya, who finds the fate of two worlds resting on her shoulders. Her destiny uncertain, Vasya will uncover surprising truths about herself and her history as she desperately tries to save Russia, Morozko, and the magical world she treasures. But she may not be able to save them all.

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.

Orphaned and cast out as a witch by her village, Vasya’s options are few: resign herself to life in a convent, or allow her older sister to make her a match with a Moscovite prince. Both doom her to life in a tower, cut off from the vast world she longs to explore. So instead she chooses adventure, disguising herself as a boy and riding her horse into the woods. When a battle with some bandits who have been terrorizing the countryside earns her the admiration of the Grand Prince of Moscow, she must carefully guard the secret of her gender to remain in his good graces—even as she realizes his kingdom is under threat from mysterious forces only she will be able to stop.