Street kings 2: motor city (2011)

Detroit detective Marty Kingston (Liotta) is the leader of an undercover narcotics team, whose members are being systematically murdered one by one. To solve the brutal killings, Kingston joins forces with a cocky, young homicide detective. But neither of them is prepared for the shocking corruption their investigation will uncover — stunning secrets that will set both men on a violent collision course with betrayal and vengeance.