The Longest Night

From the introduction:

The Longest Night is a collaborative project, the combined efforts of multiple content creators, to produce a product revolving around the theme of the Longest Night, Yule, the winter solstice, etc. Each entry is a stand alone piece designed to supplement World of Darkness games ran by Storytellers on and around the 22nd of December. Some may provide full storylines to play out in a specified gameline, where as others are simply settings in which to place players during an independently designed game, and others still are smaller supplements such as individual Bloodlines or powers similarly tied to the Longest Night.