A decade after the inauguration of the national working group on the reform of criminal justice administration in Nigeria by the then Attorney General of the Federation, Chief Akin Olujinmi, SAN, Nigeria was presented with a newly signed law—Administration of Criminal Justice Act (ACJA), which was a direct response to the growing call for reforms that would address the plethora of problems confronting the administration of the criminal justice system in Nigeria. The 495-section law harmonized the existing two principal laws: the Criminal Procedure Act (CPA) and the Criminal Procedure Code (CPC), which hitherto governed the administration of criminal justice system across all Federal-owned Courts in Nigeria and the Courts within the Federal Capital Territory. Both CPA and CPC operated for many decades in Nigeria, but had many challenges, hence the urgency for the newcomer— ACJA.