This was a really bizarre book. It actually took me quite a while to figure out what was going on, and I still think there are holes in the narrative. Incarceron is the name of a prison created for different reasons depending on who you ask (which is a nice commentary on our own prison system). However, this prison is unique in that it is sentient, keeping tabs on all its prisoners at all times. The creepiest part of the prison is that there is no entrance or escape. The population is born and will die in Incarceron, or better yet FROM Incarceron. The story centers around Finn, a "starseer" whose memories only go back a few years. Convinced he was born Outside, Finn, along with other stragglers, aim to make their escape. This story is really convoluted and their are multiple characters, each with his or her own motives, so I'm really trying to condense this. They receive unexpected help from Claudia, the daughter of the Warden of Incarceron, who lives Outside. This is beginning to make less sense, so I suggest you simply read the book!