Escaping prison

You thought defeating Silas was the end of him. Years ago, you and your friends, Finn, Lyra and Rowan, stopped his attempt to conquer the world and watched him disappear behind prison walls. You never expected to see him again. Then Cara came. The queen currently taking over the world in a fury of unseen power. Now you and your three closest friends are prisoners inside a magical fortress designed specifically to break you. Your captor isn't Cara, though. She has a war to win and far more important things to worry about. Instead, she left the prison in the hands of the one person who knows exactly how dangerous you are. Silas. And unlike you, he remembers exactly what it felt like to lose everything because of you.