Nemesis was a refuge where homicide and manhunt were utterly denied. That refuge was known for having one the lowest taxes of human-made homicide rate, just losing for the Three Greatest... That is, taking into consideration only the homicides that they counted.
Under the covers, homicides did happen, but only the ones that the higher-ups ordered themselves to their squadrons of prepared mercenaries, who were especially trained to hunt, kill, and spy.
Those mercenaries were split into several squads, constituted of twelve people each, eight of these twelve weren't Ascendants.
There were twelve squads in total, the number twelve being the strongest of all others. They would call the mercenaries of each squad depending on the level of the threat that the refuge was facing inside their walls and how strong the person that they wanted to kill was.