In my game, we have the Christian Coalition version of The Fellowship of Saint Giles. It's a Roman Catholic sponsored organization that seeks to save victims of supernatural maladies by forcing them to set aside their powers. They're housed in a bunk house on a church property, and the leader of the organization secretly want to use his wards as a personal army one day.
I didn't end up using this one this time around, but I think it mightbe amusing to have a band of mortal ghost hunters in the city. You could have your PCs clash with them, save them from themselves, or work with them.
We also have a North American branch of Monoc Securities. You could have Vadderung designate control of the subsidiary branches to another god. Loki might be an interesting choice.
