For the first few millennia of its existence, the Ordo Hereticus was but a rumour even to other Inquisitors, so fanatically was its secrecy guarded. All this came to an end following the Age of Apostasy, when it was decided that the Ordo would serve better by casting an intimidating shadow, rather than existing as a myth too easily ignored. As the Ecclesiarchy flourished, so too did the Ordo Hereticus grow with it, for nothing piques an Inquisitor's suspicion more readily than a holy man claiming to speak with the Emperor's voice. Often, its agents pose as servants of the Ecclesiarchy, feigning subservience to a Cardinal's will until they have sufficient proof of the man's guilt -– it is a rare priest with whom a member of the Ordo Hereticus cannot find fault.