Synopsis
When the tomb of a daemon is discovered on the agriworld of Niebuhr, Sister Agentha of the Orders Dialogus is sent to decipher the markings on the structure. Guarding her are Space Marines of the Exorcists Chapter, whose affinity for all things daemonic is well known... and feared. But as Agentha translates the ancient script, she realises a terrible truth: the daemon is gone. Where is it? And will any of them survive its wrath?