To Cage a Wild Bird by Brooke Fast (Divided Fates Series)- Fiction - Hardback Penguin Random House

A deadly prison. A forbidden romance. A fight for survival. THERE’S ONLY ONE RULE IN ENDLOCK: OBEY OR DIE. In Dividium, all crimes are punishable by life in prison. A prison that’s a life sentence in more ways than one. Where the wealthy can hunt the inmates for sport. Raven’s mission is simple: infiltrate the infamous and deadly Endlock Prison to save her brother. There’s just one problem: Raven has a target on her back. Her reputation as the most ruthless bounty hunter in Dividium precedes her, and the inmates she’s sent to Endlock want their revenge. So when the prison guard she’s sworn to hate becomes her only chance to survive, Raven has no choice but to trust the one person she shouldn’t…