Kirstin Drenkhahn is a lawyer. Prior to her current position as assistant professor for criminal law and criminology at Law School of the Freie Universität Berlin, she worked as a research associate at the Departments of Criminology and of Criminal Law and Procedure at the Law School of the University of Greifswald. She teaches criminology and criminal law and is a co-chair of the European Society of Criminology’s Working Group on Prison Life & Effects of Imprisonment. Her research focuses on prison law, penology and empirical prison research. She was the scientific coordinator of the project on ‘Long-term Imprisonment and the Issue of Human Rights in Member States of the European Union’. Manuela Dudeck is a medical doctor and psychiatrist. She is full professor of forensic psychiatry at the University of Ulm and the chief physician of the Clinic for Forensic Psychiatry and Psychotherapy at the Bezirkskrankenhaus Günzburg in Germany. Prior to this she worked at the Clinic for Psychiatry and Psychotherapy of the University of Greifswald. She specializes in forensic psychiatry, regularly serves as an expert witness in German courts and also teaches courses in psychiatry and psychotherapy for students of medicine and psychology. Her research focuses on mental disorders in persons detained in prison and psychiatric institutions. She was responsible for the study of the mental health of prisoners in the project on long-term imprisonment. Frieder Dünkel is a full professor at the Law School of the University of Greifswald and holds the Chair of Criminology there. He teaches prison law, criminal law and procedure and juvenile justice, as well as criminology, and is the director of the LL.M. programme in Criminology and Criminal Justice. He regularly serves as an expert witness for prison law and juvenile justice both nationally and internationally, in particular at the Council of Europe. He has undertaken research on various aspects of imprisonment throughout his career. During recent years, he has supervised three research projects on human rights issues in prison, the most recent of which was the project on long-term imprisonment.