INCARCERON, by Catherine Fisher
Finn is trapped in a rusting prison world, convinced that he came here from somewhere else. Claudia is trapped by her father’s plan to force her into a marriage with a man she can’t stand. They are literally worlds apart – but when both of them find a mysterious crystal key that allows them to communicate, both realize that they have a chance to escape from their prison … but there’s no guarantee that things will be better where they end up. This is a very cool story for older readers who aren’t afraid of a thick book!
