She survived the curse. Now she must survive the throne. All Ekata wants is to stay alive--and the chance to prove herself as a scholar. Once Ekata's brother is finally named heir to the dukedom of Kylma Above, there will be nothing to keep her at home with her murderous family. Not her books or her experiments, not her family's icy castle atop a frozen lake, not even the tantalizingly close Kylma Below, a mesmerizing underwater kingdom that provides her family with magic. But just as escape is within reach, her parents and twelve siblings fall under a strange sleeping sickness, and no one can find a cure. In the space of a single night, Ekata inherits the title of duke, her brother's captivating warrior bride, and ever-encroaching challengers from without--and within--her ministry. Nothing has prepared Ekata for diplomacy, for war, for love...or for a crown she has never wanted. If Kylma Above is to survive, Ekata must seize her family's magic and power. And if Ekata is to survive, she must quickly decide how she will wield them both.

What the Union of the North asks, they must give. Even their lives.

Seventeen-year-old Revna is a factory worker, manufacturing war machines for the Union of the North. When she's caught using illegal magic, she fears being branded a traitor and imprisoned. Meanwhile, on the front lines, Linné defied her father, a Union general, and disguised herself as a boy to join the army. They're both offered a reprieve from punishment: use your magic in a special women's military flight unit, and undertake terrifying, deadly missions under cover of darkness.

Revna and Linné can hardly stand to be in the same cockpit. But if they can't fly together, and they can't prove their worth to the war effort, they won't be safe from the consequences of their misdeeds. And if they can't find a way to fly well, the enemy's superior firepower will destroy them...if they don't destroy each other first.

We Rule the Night combines the military intrigue and magic of the Grisha trilogy with the complex female wartime friendship of Code Name Verity.