Justice means more than punishing those who commit crimes - it means never giving up the search for the truth. In his pursuit of long unsolved cases and answers for those left behind, justice is Detective Jack Kempson's creed.BlackJack is a series of Australian Telemovies starring Colin Friels as Jack Kempson, a police sergeant who turns in a corrupt colleague, and becomes very unpopular with the rest of the force. In retribution, he is assigned a new job in the basement supervising the transfer of cold case files to the police computer system. Knowing nothing of computers, he takes the opportunity, instead, to reinvestigate some of those old cases, which eventually leads to the formation a formal cold case department.