At Isambard Dunstan’s School for Wayward Children, life is trouble for 14-year-old identical twins Sadie and Saskia Dopple and their friend, former thief Erik Morrisey Ganger. But what starts out as a perfectly normal day of food fights, rioting classmates, fires, and (yawn) threats of expulsion goes suddenly and horribly wrong when a mysterious, wealthy woman appears at the school and adopts Saskia . . . without her sister.
On her own in a mansion full of dark secrets, Saskia stumbles upon a conspiracy that threatens her very life. Meanwhile, in a desperate attempt to find her, Sadie and Erik escape from the orphanage with a gang of enemies in hot pursuit. Faced with madmen, wild dogs, treasure seekers, and an otherworldly visitor with a secret message, the trio must decide who to trust—and what to believe—if they are to survive long enough to find each other again.