'Last Halloween, Sienna turned her boyfriend into a cat – totally by accident. Hidden away in the bayous, Sienna knows she is the Neville Longbottom of the esoteric world. Now it’s All Hallows Eve again, and the young witch needs to help Luke get his body back. But as the evening progresses, Sienna’s nerves are frazzled by her lack of ability and an increasingly snarky cat.'
Source: Publisher's blurb.