Robert Carter

Robert Carter was a delusional serial killer and an "Angel of Death" who appeared in Dying to Live in Profiler.

Background
Robert Carter's story made the news when he was in dire need of a heart transplant and his brother Michael committed suicide for the sake of leaving Robert his heart for the necessary transplant, because Robert and Michael both had AB, a rare blood type with far less shots at a match. Robert didn't just grow up to be a veterinarian, he felt a devout gratitude for the sacrifice his brother made to him, as well as a divine blessing he believed terminally ill people should have as their entitlement. About a month before the events of the episode, he quit his job as a veterinarian, having acquired the names of multiple people with AB blood types posing as a phlebotomist under the name of Dr. Miles Casaro, as well as multiple other aliases, all across the nation, as high as 167. Seeking out organ transplant patients in serious condition with AB blood types, he decided to make it his mission to harvest the organs of the donor candidates before killing them, leaving the organs at the hospitals where the patients stayed so they could immediately receive the crucial organs necessary for them. Hacking into NOPA, the nations' organ transplant regulation database, he not only sought out AB negative names so he could make them sign donor cards, which often failed, but he falsified consent forms for when the surgeries were underway so it was too late to question validity. He would also visit each patient before and after the murder and transplant.

Dying to Live
After killing Mark Flanagan, he does similar to Jeffrey Lefitz, darting him when he wakes him up and cutting his liver out and leaving it for a boy named Jimmy Driscoll. He then repeats with Austin Mahlena, giving his heart to Mercedes Lozano, who tells the VCTF about "her angel" who visited her before the murder and left a lotus for her before he woke up, just like the other patients. When scouting hotels, John Grant and Marcus Payton storm the wrong room when Lou Handleman calls the raid too early, letting Carter get away before he can dissect Matt Harahan, whose saved in the nick of time. But he still fires a dart at Grant before he drives off, despite Payton shooting at him, just before dropping the van and boosting a car. When NOPA cuts off info on AB negative candidates and recipients, the team asks for a sudden 24-hour critical condition change to lure him out, in the info of a boy named Andrew who needs a heart. The lure works and Carter arrives to see Andrew, but when the sting is revealed, he tries to run, then pulls a gun when he's surrounded. He aims the weapon at his own head and offers his brother's heart, with both he and Andrew's mother Minnie demanding the transplant team be called. Despite the attempts of the FBI to talk him down, he kills himself instantly, with the transplant being arranged and successfully conducted. They soon find more of his belongings, including the list of names of people he intended to kill to harvest their organs.

Modus Operandi
Carter target people with AB blood types, as victims and organ recipients, the same blood type as himself and his brother. The victims were middle-aged men, the recipients often young adults and kids. He chose the victims who didn't sign donor cards when he got their names under various aliases as a phlebotomist, all the while using the NOPA database to track them and falsify consent forms to use for the transplants. He would then book rooms in hotels under the name "John Smith", a common-name alias, abducting the victims from their homes at night under sedation, using the sedation in a dart gun if they woke up. He always chose motels in Atlanta, where he would dissect them alive using surgical expertise to remove their organs while they were still physically alive. He carefully sealed them up, killed them with phenobarbital overdoses, then called 911 to report their bodies, cleaning the scene, taking the uncontaminated organs to the hospitals the recipients were at, with consent forms in the boxes with the organs to have no question asked until the patients already had the transplants. His signature was comforting the patients before the murders to tell them they'd get new organs, as well as leaving lotuses in both the crime scenes and the rooms of the patients as a token to them and the transplants. When Carter assaulted Grant, he shot Grant with a sedative dart.

Known Victims
Carter likely had many more victims as found in his book of names of AB negative donors.
 * Mark Flannigan (his unspecified organ was donated to Keller, first name unrevealed)
 * Jeffrey Lefitz (abducted from Indianapolis, taken to Atlanta; his liver was removed and delivered to Jimmy Driscoll)
 * Austin Mahlena (his heart was removed and delivered to Mercedes Lozano)
 * Matt Harahan (attempted; abducted and nearly cut out his kidney; was rescued)
 * John Grant (assaulted; shot with a tranquilizer dart)