Hudson & Brand, Inquiry Agents of the Obscurefor 7th editionCall of Cthulhuis an officialCthulhu by Gaslightconsulting detective agency in the style of the extravagant freelancers such as may be found in the stories of the great Sherlock Holmes or Hercule Poirot.

This supporting booklet takes a small part of that setting and expands it for the benefit of Keepers who wish to add something a little unusual to their games.