Welcome to the Witherward, and to a London that is not quite like our own… The grandchildren of the High Sorcerer are nothing but trouble. Cassia is determined to be inducted into the Society of Young Gifted Sorcerers. But the harder she trains, the more unreliable her spells become. But when Cassia accidentally awakens an archaic power, the fate of the entire city falls into her hands. Ollivan, her disgraced older brother, is scheming to seize the leadership of the society and revoke his banishment. But if he is to succeed, he must unravel a vengeful plot he set in motion the night he was exiled. The problem? His sister has triggered the spell. The city is divided between six rulers of six warring, magical factions. Each wields unique powers. Each is uniquely dangerous. The tenuous peace between them all is barely maintained by fragile accords. Now Cassia’s only chance to save that peace and put an end to the destruction she’s unleashed is to join forces with her villainous estranged brother.