Believed dead after a mission gone wrong, she has lived for months among werewolves under the protection of the Praetor Lupus. When Isabelle Lightwood finally uncovers the truth and tracks her down, the reunion is anything but simple. Her parabatai is no longer only a Shadowhunter, and Izzy must face the impossible choice between the Clave’s laws and the girl she once swore herself to for life.