The Sorcerous Crimes Division: Devilbone by Scott Warren
The Sorcerous Crimes Division is an organization of magic-adept constables is charged with investigating and policing sorcery-related crimes in the Free City of Kaharas.
In Devilbone, Commander Vulfort struggles with a growing problem of sorcerous contraband within the city that reaches a breaking point when an ancient necromantic reagent called Devilbone Dust, one of 14 forbidden substances, is discovered just outside the city. Meanwhile, Private Tanner has just arrived at the Division and faces the difficulty of adjusting to the dangerous life of a raider and tension within his squad. Together they must find the source of the Devilbone before the dark powers at work use it to destroy the city they are sworn to protect.