The beads are cursed. The floats are possessed. And the King Cake might kill you.Mrs. Claus was promised a vacation-a little jazz, a few beignets, and absolutely no holiday heroics. But when the team arrives in New Orleans for Mardi Gras, something is very wrong with the magic. Krewes are vanishing. Parade floats are waking up angry. And a sinister masked figure called Baron Noire is twisting Carnival's joy into a spell of chaos.With Jack Frost slinging sass and ice, Nikolaus Claus armed with an enchanted dagger, and Felicia Sparklehoof (the most dramatic reindeer this side of the Mississippi) stomping glitter into every ghostly encounter, the gang must uncover the truth behind a magical contagion spreading through the city.Ancient voodoo, spectral jazz musicians, and a haunted King Cake with killer intentions? Just another Tuesday for the North Pole's fiercest matriarch.Can Mrs. Claus stop the collapse of the Mardi Gras spirit before Baron Noire rewrites the rules of magic forever?Laissez les bons temps rouler... if you dare.