In a secret world where half-angel warriors are sworn to fight demons, parabatai is a sacred word.

A parabatai is your partner in battle. A parabatai is your best friend. Parabatai can be everything to each other — but they can never fall in love.

Emma Carstairs is a Shadowhunter, one in a long line of Shadowhunters tasked with protecting the world from demons. With her parabatai Julian Blackthorn, she patrols the streets of an secret Los Angeles where vampires party on the Sunset Strip, and faeries teeter on the edge of open war with Shadowhunters. When the bodies of humans and faeries start turning up murdered in the same way Emma’s parents were murdered years ago, an uneasy alliance is formed. This is Emma’s chance for revenge — and Julian’s chance to get back his half-faerie brother, Mark, who was kidnapped five years ago. All Emma, Mark and Julian have to do  is solve the murders within two weeks . . . before the murderer targets them.

Their search takes Emma from sea caves full of sorcery to a dark lottery where death is dispensed. As she uncovers the past, she begins to peel away the secrets of the present: What has Julian been hiding from her all these years? Why does Shadowhunter law forbid parabatai to fall in love? Who really killed her parents — and can she bear to know the truth?

The magic and adventure of the Shadowhunter Chronicles have captured the imaginations of millions of readers across the globe. Fall in love with Emma and her friends in this pulse-pounding, heart-rending new volume sure to delight new readers and longtime fans.