The exiled House of the Scorpion.  Descended from the infamous Scorpion Clan, the members of House Yalakráno initially specialized in hunting and defeating intelligent undead.  Later, they adapted their skills for the assassination of living prey.  In Ohma, such practices were legal when used by Citizens, but eventually the house succumbed to corruption by allowing Denizens and Residents in on the practice.  When they refused to purge themselves forty years ago, their Citizens were cast out from the city (into the Draqin Empire), but many Denizens managed to escape a final death by hunting down their own phylacteries.  Today, the tale of wild assassins hidden in broad daylight has taken on a near-mythic quality.