Emma Carstairs has finnaly avenged her parents. She though she'd be at peace. But she is anything but calm. Torn between her desire for her parabatai Julian and her desire to protect him from the brutal consequences of parabatai relationships, she has begun dating his brother Mark. But Mark has spent the past five years trapped in Faerie ; can he ever truly be a Shadowhunter again ? And the faerie courts are not silent. The Unseelie King is tired of the Cold Peace, and will no longer concede to the Shadowhunters' demands. Caught between the demands of faerie and the laws of the Clave, Emma, Julian and Mark must find a way to come together to defend evrything they hold dear - before it's too late.