The Administration of Criminal Justice Act (ACJA) 2015, came like a messiah, ushering new hopes and reiterating existing rights and principles in the Nigerian Criminal Justice System which before now, had attracted so much odium and contempt from within and outside Nigeria. Ten (10) years after its enactment, it has become necessary to take stock of the gains as well as the shortcomings of the act; to see if has been able to achieve its objectives. This research adopted the Doctrinal research method. Although this research agrees that the ACJA 2015 is a bold and innovative intervention in the administration of criminal justice system, it found out that there still exist some challenges which if not tackled would make a folly of the entire process of the enactment of a new act for criminal justice administration.
Keywords: 2015, Administration, Challenges, Prospects, criminal justice act (ACJA)
