This Handbook on Prison Pre-trial Detainee Law Clinic has been written to provide a guide to law teachers and law students working in Prison Pre-trial Law Clinics or other criminal justice, human rights and access to justice projects and programmes in Nigeria.The Handbook provides a basic text for training law teachers, students and supervisors in a prison, human rights, access to justice and criminal justice clinic or programme. It is based on the curriculum written for the academic component of prison pre-trial law clinics and it covers the following themes: Objectives and Scope of a Prison Pre-trial Detainee Law Clinic; The Nigerian Criminal Justice System; Procedure for Instituting Criminal Proceedings; An overview of the Human Rights of Prisoners/Pre-trial Detainees in Nigeria; Access to Justice; Role of Law Clinics in Prison and Pre-trial Detention; Professional Responsibility and Ethics; Interviewing and Counselling at Prison Pre-trial Detainee Law Clinic; Report and Opinion Writing; and File Management.