Death Warrant (1990)

The Canadian policeman Louis Burke is assigned in a jail to investigate the murders of prisoners and jailors. When in jail, Louis, using his outstandings martial arts skills, is able to save his life and make himself respected in that violent world. At least, helped by two another prisoners, he succeded in finding the truth about the dreadful crimes. In a violent and corrupt prison, decorated cop Louis Burke must infiltrate the jail to find answers to a number of inside murders. What he finds is a struggle of life and death tied in to his own past.