An Unusual Chain of Events

A brutal rape leads to a desire for revenge. Simply picking up and carrying on is not an option and revenge leads to murder. The police are having trouble figuring out who the victim was and just who the killer is. The killer has more than one identity and their move into the world of murder has started something of a chain reaction. The hunt is on, a half-brother of one victim, a powerful drug dealer, muscles in on the action also looking for revenge and he gives the investigating officer a stark choice. Find the killer or I will! Dead-end after dead-end, the hunt for the killer looks to be headed nowhere and the killer looks ready to strike again. A dark past surfaces inch by inch and a trail of death and destruction shows itself to the policeman leading the investigation. Where did this unusual chain of events begin? What was the first link in the chain of events that went on to wrap around the hearts and minds of so many?