In the dark and dangerous streets of the hive city of Varangantua, law enforcers and vigilantes live alongside crime lords and gangers, and violence is only ever a moment away. Once a Killer is a paperback collection of eight short stories by Black Library authors including Nick Kyme, Denny Flowers, Jude Reid, and more. Each tale is packed full of bloodshed, corruption, and betrayal, and together, they paint a grisly picture of this teeming city of thieves.