In the midst of your conversations, a courier with a rat-like build and face scuttles into the room. You had not seen him until he spoke, his voice a garbled mess of static instead of a natural sound. His mouth does not move at all when he speaks.
"Greetings, Acolytes. You are scheduled to deploy on Hive Desoleum under the Inquisitor's command. His numerous acolytes are deploying as well to stymie the myriad heresies brewing within the Hive. You are but to combat one of them." He stops for a brief moment. You can hear mechanical whirring as the courier receives further commands.
"The Hive's upper levels, home to the elite and the noble, are reporting more and more gruesome deaths. Items have been found with the corpses; our savants presume they are xenos or archaeotech of origin, but they are most definitely heretical. The nobles are concerned, and have collated the deaths, the items, and the erratic behavior the dead nobles portrayed before their demise."
More whirring and beeping. "A noble called Lans Guljian has exhibited these same behaviors. Your task is to investigate the deaths and possible connections to any illicit artifacts, determine if they are potential dangers of a wider nature, and terminate their distribution. Recover and contain any items uncovered, lest they corrupt others."
Suddenly, the courier's vox-caster switches off, and he begins to speak of his own accord. "Carry the Emperor's Light. Please deploy as soon as you are ready, though you may wish to explore the Flagellum a bit, and I will guide you. I advise you hurry. Also, you may wish to seek accommodations in Hive Desoleum, and that may be arranged through me," he begins, but faces the floor, "though with some difficulty. I am at your disposal, Acolytes."