Amici Noctis
The "Friends of the Night" are a vampiric secret society that largely governs Clan Lasombra. The name of the society changes with the current lingua franca among mortals. For much of the early and late modern era, they were known as "Les Amis Noirs". Before the rise of Rome, they were called "Brether Nokw", and during the reign of the Ashirra, the Friends of the Night were known as the "Asdiqa al-Lail".
The most infamous practice of the Friends is its role in managing diablerie within the clan, usually through Courts of Blood. The Lasombra believe that if diablerie exists, somebody is going to do it, and they would rather that it be applied productively. After all, proximity to Caine is an investment, and that investment can be spent wisely, or transferred to a more responsible keeper.