Byrn: At Christmas — Joleene Naylor

Part of a collection called Tales of the Executioners about the vampires in the elite “police force”. It's 1755. With The Guild in it's infancy, there are only so many Executioners, so when a report of mass killings rolls in at Christmas time, Byrn is sent to sort it out. He'd better do something special to appease his wife.

Can be read as a stand alone.