Dark tales: notorious Christmas killings in history

It's the most dangerous time of the year! Crime spikes at Christmas, thanks to many seasonal reasons. More stress, time off work, and Christmastime loneliness can all contribute to criminal activity during the holidays. However, it's not just petty crime that takes place at this time of the year. That's right, there have been plenty of Christmastime killings over the years, stretching back centuries. Read into the most gruesome of the lot in this gallery.