Jingle Bells

My name is Zoe Bryce and I have a secret. The date is 24th December and in the last eleven (or is it twelve?) days, I have watched my world get turned upside down. Now, not only do I have to save Christmas, but I also have to save the world. 
 
And I need your help. 
 
This tale of the supernatural at the most wonderful time of the year is best enjoyed on Christmas Eve, with a mug of hot chocolate in front of a log fire.