Approximately 58,000 people are currently incarcerated in German prisons. Over half of them reoffend after their release. These statistics raise doubts about the prison system. Is something fundamentally wrong with German prisons? To understand what prison does to people, journalist Frank Seibert voluntarily goes to jail. For a few hours, a cell door closes behind him. Isolation and the sudden loss of control change everything, he says after his “release”.