Blood Follows by Steven Erikson

A darkly comic Gothic tale set in the Malazan world that follows two roguish necromancers and their put-upon manservant as they arrive in an isolated town beset by a mysterious, blood-drinking sickness; drawn into local superstitions, betrayals, and outbreaks of violent undeath, the trio manipulates and is manipulated amid corpse-raising, bureaucratic rot, and grim irony, blending macabre horror with dry satire and moral ambiguity.