Recall that erstwhile in litigation, searching for the smoking gun once meant navigating oceans of paper captured in folders, boxes, cabinets, rooms and warehouses. But today, that is not to be. The smoking gun is likely smoking on someone’s hard drive, servers or computer networks waiting to be discovered and made available to court in proof of a particular claim or defence thereof. Therefore, in order to develop the cutting-edge digital skills needed to become proficient in Digital Evidence, eDiscovery and digital forensics to enable lawyers, prosecutors, law enforcement and judges to take advantage of the potential knowledge inherent in digital data to streamline the pre-trial and trial processes, saw the development of this book as an Electronic Evidentiary Tool for 21st Century Law Practice for Admissibility of Digital Evidence and Management of eDiscovery Law Practice for the Bar and the Bench in Nigeria.