Geheimnisnacht: The Night of Mystery: when the dark moon Morrslieb is full. On this night, which falls between the months Vorgeheim and Nachgeheim, sensible folk bar their doors and stay within their houses. Daemons and altereds are said to roam freely and and conduct ceremonies of worship to the Ruinous Powers on this night. In 2495 Felix Jaeger and Gotrek Gurnisson, whilst travelling through the Reikwald Forest, fleeing the aftermath of the Window Tax riots, become embroiled in just such an incident. The village they sought shelter in had been attacked by cultists and several citizens carried off. Felix & Gotrek track the cultists to their lair and dispatch them.
Source: Ignorant Armies: Geheimnisnacht by William King
Submitter: Simguinus
Hive World Terra