Christmas, the year's most revered holiday, has long been associated with joy, peace, and gift-giving. But for just as long, though largely forgotten or overlooked to maintain a positive festive mood and to keep the holiday "kid-friendly," were depictions of the season's darker side that could also encompass tales of horror. Deadly monsters stalking the night during the Yuletide season; brutal serial killers who dress as Santa Claus while committing...