To deal with crimes and criminals in any society deserves more of scientific approach than mere military, fire brigade approach. Criminals are products of the society; they were not naturally criminals for God never made any one as such. Many factors are contributories for which crime becomes certainly an important area of study that any government must take with all seriousness to ensure a crime free society. This work is therefore an attempt to evaluate the Nigerian criminal justice system with the view to identifying some of the reasons for the failure of the system. This work grew out of my undergraduate research project at the Usmanu Danfodiyo University, Sokoto, Nigeria where I studied and obtained Bachelor of Law Degree.