A Calamity of Contagious Curses - Cordelia Rook - Bog

There's toil and trouble ahead for Autumn and Gravy when a client turns up dead, mere hours after calling Autumn to rant about a curse and demand a cure. It wasn't the woman's first unreasonable request. But it would be her last.
Make that double toil and trouble. By the time Autumn arrives in the victim's hometown, all spell has broken loose. The enigmatic curse seems to be spreading, pitting neighbor against neighbor, friend against friend, and bringing all manner of vice and violence bubbling to the surface.
Powered by a lot of caffeine and a little min pin, Autumn races to find the witch responsible and cure a town gone mad, before the curse strikes again. Because the next life it claims might just be her own.