The Keepers of the Feather were an ultra-protective, highly secretive society of Wereraven spies based in Barovia. They never appeared openly as anything less than human, and operated out of the Blue Water Inn and the Wizard of Wines. Though they did ply their trade in wine which supplied the entire valley, the Keepers had a hidden mission that was never spoken: to oppose the rule of Strahd von Zarovich.
Many of the Keepers of the Feather were members of the Martikov family who owned these establishments, but some were brought in as trusted confidants. In these cases, the new initiate would be infected with Lycanthropy, and upon survival, give a blood oath to uphold the tenets of the organization. While the group sought to end Strahd, they to operate slowly and carefully, as the smallest leak of information in their quest could lead to the pulverization of the entire organization.