Basiliska

Cecily, sorceress, ex-convict, and shopkeeper extraordinaire, receives a summons delivered to her door by none other than Orson, the resident magical government representative. In a desperate attempt to avoid talking to people she doesn't like, she hatches a plan with the local pariah to keep her where she is.

Not that said local pariah is aware of this. Or that Cecily necessarily goes through with the plan.

Needless to say, things start to get complicated.