Intelligent, witty and utterly compelling fantasy: Six of Crows meets The Prestige, for fans of V.E. Schwab.

Welcome to the Witherward, and to a London that is not quite like our own. Here, it's summertime in February, the Underground is a cavern of wonders and magic fills the streets. But this London is a city divided, split between six rival magical factions, each with their own extraordinary talents and the alpha of the Changelings, Gedeon Ravenswood, has gone rogue, threatening the fragile accords that have held London together for decades.

Ilsa is a shapeshifting Changeling who has spent the first seventeen years of her life marooned in the wrong London. Alone, she scratched out a living first as a pickpocket and then as a stage magician's assistant, dazzling audiences by using her Changeling talents to perform impossible illusions. When she's dragged through a portal into the Witherward, Ilsa finally feels like she belongs. Yet her new home is on the brink of civil war: pulled into the fray, Ilsa must use all the tricks up her sleeve simply to stay alive.