Hidden Circle
From WoWWiki
The Hidden Circle (aka or includes SI:7), is a rogue Alliance organization, based in the Forlorn Cavern of Ironforge.
The guild is currently led by Hulfdan Blackbeard, and they have operatives working in Khaz Modan who work to collect valuable gems through illegal means, specifically targeting King Magni Bronzebeard's strip mining products. (see quest:Simple Subterfugin')
