A guy shot dead the owner of a local diner during rush hour. A client was injured as well. The murderer could be a dope dealer well known in the neighborhood, but he had just been a witness who confessed who the real shooter was: a black guy with a hoodie named Jeremy Miller. The target anyway was not the victim, but the local hospital doctor (Vondie Curtis-Hall) in which the shooter's sister died of complication from HIV days before. Unfortunately, the guy committed suicide before the detectives by shooting himself. Investigation went on, the cause of death for the little girl was head trauma at first sight, then medical examiner realized it was related to powerful medication she swallowed outside the protocol. She was used as guinea pig for a HIV vaccine, taking the place of animals in this and Borgia found out she wasn't the only one. Furthermore at trial we find out the doctor had his own agenda.
The point is: do poor children deserve to die for the greater good aka a vaccine that cure humanity from a widespread disease? Families would allow it if they are in a state of desperation (even in cancer cases), Branch stated; it's not easy to watch your own kids suffer.