Incarceron

‍Summarize the book:
Finn is in a prison called incarceron. He was born in incarceron and has never been outside but he knows of the outside. A princess is on the outside world looking to find incarceron. while looking she finds a key that allows her to talk to the inside of the prison. she finds that Finn is in a horrible place and he needs help getting out. Finn soon finds that it isn't only him who needs help and it will take the both of them to save each other. By Lauren Munley