Sisters of Silence - Sisters of Silence: The Sisters of Silence, also known as the "Silent Sisterhood," the "Witch-Seekers," the "Pale Scourge," the "Soulless Ones," the "Null Maidens," the "Eyrine" and the "Daughters of the Abyss," were once the militant arm of the Adeptus Astra Telepathica and were referred to internally within the records of the Adeptus Terra as the Departmento Investigates. They are an all-female order of Imperial Witch Hunters and soulless psychic Nulls tasked with hunting down renegade psykers and other psychic threats across the galaxy. They also help to enforce the Imperium's rigid laws on the use of psychic powers.The Silent Sisterhood was most active during the time of the Great Crusade in the late 30th and early 31st Millennia. In the wake of the Horus Heresy they became far less active in Imperial affairs to such a degree that for most of the last 10,000 Terran years the order was wrongfully believed to have been disbanded. Yet the Sisters of Silence have recently returned to prominence in the Imperium of Man following the birth of the Great Rift and the start of the Era Indomitus.The Sisters of Silence's original purpose was to hunt and kill Human Rogue Psykers whose activities presented a terrible danger to the people of the newborn Imperium and to oversee the tithe of psykers from every Imperial world to Terra. Riding the dark void between the stars upon the dreaded Black Ships during the Great Crusade, the Silent Sisterhood was the enforcer of the Great Tithe, known by some as the "Psyker Cull" and the "Hunt That Never Ends."Each one of the warriors of this order are psychic Nulls, a soulless being who inspires dread among other mortals wherever they walk. The Sisters of Silence's primary base of operations was the Somnus Citadel on Luna, the moon of Terra, which was maintained by the ancient Selenite Cults of gene-engineers who had long governed that world.Along with the Legio Custodes, the Sisters of Silence had the right and duty to walk freely within the inner sanctum of the Imperial Vaults deep beneath the Imperial Palace, the sovereign and sole domain of the Emperor and His household at the behest and license of the Master of Mankind. Following the end of the Horus Heresy, Mankind became superstitious and fearful of the unknown, and the Silent Sisterhood was cast out by a distrustful Imperium.They disappeared from Imperial history for nearly 1,500 standard years, until the Imperium faced annihilation at the hands of the massive Ork WAAAGH! led by the warlord known only as The Beast in the 32nd Millennium. The last vestiges of the Silent Sisterhood would play a key role in defeating this Ork WAAAGH! and diverting disaster.Though officially disbanded after the Age of Apostasy in the 36th Millennium, many enclaves of the Silent Sisterhood still fought for the Imperial cause, albeit in a more secretive and elite capacity than before. With the resurrection of Roboute Guilliman as the lord commander of the Imperium and Imperial Regent after the birth of the Great Rift in 999.M41, the Silent Sisterhood has begun to serve more openly alongside Imperial military forces once more, particularly among the fleets of the Indomitus Crusade.