Shadowhunter Emma Carstairs And Her Parabatai Julian Blackthorn Race To Stop A Demonic Plot That Threatens Los Angeles-- Five Years Age The Shadowhunters Were Brought To The Brink Of Oblivion. Emma Carstairs Is Now A Young Woman Bent On Discovering What Killed Her Parents And Avenging Her Losses. Together With Her Parabatai Julian Blackthorn, She Investigates A Demonic Plot That Stretches Across Los Angeles. Julian's Brother Mark Was Captured By The Faeries Five Years Ago, But Has Been Returned As A Bargaining Chip. The Faeries Are Desperate To Find Out Who Is Murdering Their Kind And They Need The Shadowhunters' Help To Do It. Cassandra Clare.