Incarceron Series by Catherine Fisher

Incarceron -- a futuristic prison, sealed from view, where the descendants of the original prisoners live in a dark world torn by rivalry and savagery. It is a terrifying mix of high technology -- a living building which pervades the novel as an ever-watchful, ever-vengeful character, and a typical medieval torture chamber -- chains, great halls, dungeons. A young prisoner, Finn, has haunting visions of an earlier life, and cannot believe he was born here and has always been here... moreIncarceron -- a futuristic prison, sealed from view, where the descendants of the original prisoners live in a dark world torn by rivalry and savagery. It is a terrifying mix of high technology -- a living building which pervades the novel as an ever-watchful, ever-vengeful character, and a typical medieval torture chamber -- chains, great halls, dungeons. A young prisoner, Finn, has haunting visions of an earlier life, and cannot believe he was born here and has always been here. In the outer world, Claudia, daughter of the Warden of Incarceron, is trapped in her own form of prison -- a futuristic world constructed beautifully to look like a past era, an imminent marriage she dreads. She knows nothing of Incarceron, except that it exists. But there comes a moment when Finn, inside Incarceron, and Claudia, outside, simultaneously find a device -- a crystal key, through which they can talk to each other. And so the plan for Finn's escape is born ... less

The only one who escaped... and the one who could destroy them all.Incarceron, the living prison, has lost one of its inmates to the outside world: Finn's escaped, only to find that Outside is not at all what he expected. Used to the technologically advanced, if violently harsh, conditions of the prison, Finn is now forced to obey the rules of Protocol, which require all people to live without technology... moreThe only one who escaped... and the one who could destroy them all.Incarceron, the living prison, has lost one of its inmates to the outside world: Finn's escaped, only to find that Outside is not at all what he expected. Used to the technologically advanced, if violently harsh, conditions of the prison, Finn is now forced to obey the rules of Protocol, which require all people to live without technology. To Finn, Outside is just a prison of another kind, especially when Claudia, the daughter of the prison's warden, declares Finn the lost heir to the throne. When another claimant emerges, both Finn's and Claudia's very lives hang on Finn convincing the Court of something that even he doesn't fully believe.Meanwhile, Finn's oathbrother Keiro and his friend Attia are still trapped inside Incarceron. They are searching for a magical glove, which legend says Sapphique used to escape. To find it, they must battle the prison itself, because Incarceron wants the glove too. less