A few years ago Hunter and 3 other cops busted some drug dealers. The surviving member of the gang claims that there 4 million dollars more than what was turned into evidence. So all four cops were investigated, while Hunter was cleared the other 3 were not, although they were not prosecuted, they were still black balled. It was speculated that because 4 million was missing that there was a fourth member. When one of the three cops was killed, Hunter is being investigated again. And the surviving gang member has just been released from prison. So there's speculation that he's getting back at them.