Lussi

There is a ghost in Norwegian folklore that frightens children each Christmas. Her name is Lussi, and she appears as a pale spectre at the windows who screeches in anger. Her purpose is to check on everyone at home each night of December leading up to Christmas Day and make sure that all household chores have been done. Because if not, she would strike people down and damage the chimneys. Lussi could also become mostly active on the 12th and 13th December, which is the most scariest time. As we just had the 13th December on a Friday, it makes it all the more creepy.  

If this isn't scary enough, Lussi brings paranormal creatures with her including trolls and demons and the Oskorei or Wild Hunt. Her reputation became known as Lussi Langnatt or "Lussi Long Night". The 12th and 13th December have been associated with Lussi because it's during a time when spirits and the undead walk. It was once the longest night of the year in the old sense before switching to the modern calendar. People have been too afraid to go out on such nights as Lussi and her evil hunters will kidnap them. It's a time when animals could talk to each other and many other magical events. 

It's connected to the fun festival of Saint Lucy, which is a Swedish celebration that reveals her to be a pretty young woman dressed all in white, with a crown of leaves and candles. Children sing Lucy songs and eat special buns and cakes. It's almost like a mystical time before the darkest and coldest season. St Lucy and the witch Lussi are like forces of light and darkness. St Lucy brings hope in a time of grim winter and Lussi Long Night brings fear. 

She Wolf Night