"For all intents and purposes, we are still blissfully separated from the mortals, but there have been...complications."

When a rise in London's supernatural crime puts Fey society at risk of discovery, the Winter Council turns to an unlikely solution: Avery Hemlock, the changeling they sentenced to 500 Years of Nightmares. Inherently lacking social grace and missing approximately two centuries of world knowledge, Avery must find a way to acclimate and solve the case or lose her probationary freedom.