Can a prison free those who enter?

Nisida, moored like a boat in the Mediterranean, is a small island nestled between Capri and Bagnoli, off the coast of Naples. Each day, through the early morning light, Elisabetta Maiorano travels across the city, passes by the guards on the way into the detention centre, hands over her bag and arrives at her classroom. All thoughts are suspended once inside. Usually Elisabetta hasn't spoken to anyone since the day before