The Brotherhood of the Horned Darkness is a dangerous and highly organised malefic Chaos Cult whose origins and activities go back according to some sources to the founding of the Calixis Sector and quite possibly beyond. This cult has been repeatedly smashed time and again over the centuries only to appear again some standard years or decades later. Membership, size, form, and power may vary, but it is always recognisable in its core beliefs and the object of its worship -- the daemon Balphomael, the Horned Darkness. The Brotherhood, known to some as the "Pact of Balphomael" or the "Black Society," is recognised by the Ordo Malleus as a near archetypical daemon-worshipping Chaos Cult, although often better resourced and more dangerous than most. Appealing to the Imperial nobility and the