Merry Hexmas

Christmas has come to the Quarter, and that means big things for Ofelia Archer.
Her father is getting out of the hospital for a holiday visit, she's about to meet two future sisters-in-law for the first time, and this is her first Christmas with her fiancé.
She should be on top of the world.
There's just one little problem.
Bodies are showing up around the French Quarter, what looks to be candy canes pierced through their hearts. When those candy canes are removed, some of the victims come back, and they're different people. Not zombies or anything, but suddenly better people than they were when they were stabbed. It seems they've been imbued with the Christmas spirit out of nowhere.
And some others aren't coming back at all.
The attacks have "demon" written all over them. This demon, however, thinks he's Santa Claus. He wears the suit and everything.
Ofelia is determined to have a good holiday. She just has a fight to finish before she can get to the nog and presents of it all.
It's going to be a doozy of a fight.