This group concerns the activities of, and legends surrounding, the acolytes of his excellency Inquisitor-Exorcist Mordant Crimson, a campaign for Dark Heresy the Warhammer 40,000 Roleplaying game from Fantasy Flight Games.
Even having lost three of their original members (the assassin Constantine, the cleric Nihilus and the notorious scum "Sham" Haxtus) and with a fourth missing (the guardsman Zaddion Zaddion) their devotion remains strong.
The Acolytes are currently travelling through the Warp on a mission to deliver Sham's remains back to his family.
For the Emperor!