The Official Version
From the records of Watch Station Erioch:
"...The source of the psychic plague affecting the Deathwatch Librarium was eventually traced back to the Laeran artefacts discovered in the ruins on the world of Iphigenia. It appears that the work of Inquisitor Albertine Hoffmann and Brother-Codicier Ardashir in studying the sonic weaponry that had been recovered exposed them to the corruption carried within the very language of the Laer.
Kill-Team Claritas Pennata pursued the daemonic infestation tirelessly: first destroying the corrupted Brother-Codicer Ardashir and purging Watch Station Andronicus of the taint he had introduced; then purging the daemonic taint from the library of the Sisters Dialogus at Babel XVII, whilst cleansing corruption within their own Kill-team; later hunting the daemonhost that was all that remained of Inquisitor Hoffmann to the battlefleet near Iphigenia, where they succeeded in not only destroying it but recovering the Emperor-class battlecruiser that she had commandeered and rooting out an infiltrator within the ranks of the Deathwatch itself.
Finally, under the command of Brother-Chaplain Siegmund Salenar, they pursued the taint back to the Laeran sites on Iphigenia, ran the Tau blockade, succeeded in destroying Watch Station Skapula in order to keep it out of the foul xenos' hands, and succeeded in destroying all three Laeran sites. Brother-Librarian Agravaine reports that it appears that the Laeran ruins appear to have been sucked into the Immaterium, and that the Warp appears to be uncommonly still and calm in the vicinity of Iphigenia.
Kill-Team Claritas Pennata and the Kill-Marine Tacitus, last seen hunting a Tau Ethereal in the vicinity of Iphigenia, are presumed missing in action. They are remembered as heroes of the Deathwatch. May the Emperor's light shine upon their souls."
( The Secret History )
From the records of Watch Station Erioch:
"...The source of the psychic plague affecting the Deathwatch Librarium was eventually traced back to the Laeran artefacts discovered in the ruins on the world of Iphigenia. It appears that the work of Inquisitor Albertine Hoffmann and Brother-Codicier Ardashir in studying the sonic weaponry that had been recovered exposed them to the corruption carried within the very language of the Laer.
Kill-Team Claritas Pennata pursued the daemonic infestation tirelessly: first destroying the corrupted Brother-Codicer Ardashir and purging Watch Station Andronicus of the taint he had introduced; then purging the daemonic taint from the library of the Sisters Dialogus at Babel XVII, whilst cleansing corruption within their own Kill-team; later hunting the daemonhost that was all that remained of Inquisitor Hoffmann to the battlefleet near Iphigenia, where they succeeded in not only destroying it but recovering the Emperor-class battlecruiser that she had commandeered and rooting out an infiltrator within the ranks of the Deathwatch itself.
Finally, under the command of Brother-Chaplain Siegmund Salenar, they pursued the taint back to the Laeran sites on Iphigenia, ran the Tau blockade, succeeded in destroying Watch Station Skapula in order to keep it out of the foul xenos' hands, and succeeded in destroying all three Laeran sites. Brother-Librarian Agravaine reports that it appears that the Laeran ruins appear to have been sucked into the Immaterium, and that the Warp appears to be uncommonly still and calm in the vicinity of Iphigenia.
Kill-Team Claritas Pennata and the Kill-Marine Tacitus, last seen hunting a Tau Ethereal in the vicinity of Iphigenia, are presumed missing in action. They are remembered as heroes of the Deathwatch. May the Emperor's light shine upon their souls."
( The Secret History )