Amberley Vail - Periremunda: Shortly after the Simia Orichalcae incident, in 933.M41, Vail arrived on the odd plateau-world of Periremunda. It is unknown what first brought her here: the ongoing civil uprising, which turned out to be the work of yet another Genestealer Cult, or the trail of Ernst Stavros Killian and Magos Metheius, a rogue duo of Inquisitor and Tech-priest identified as the the perpetrators of the raid on the Valley of Daemons.The Genestealer infestation proved even worse than that on Gravalax, and a Tyranid hive fleet was already approaching Periremunda in response to the siren call of the Genestealer Cult's Broodmind. Vail and her Sanctioned Psyker Rakel succeeded in hunting down and destroying the Genestealer Patriarch, disrupting the call of ther Broodmind at least for the time being. Unfortunately, the Shadow in the Warp of an approaching splinter fleet remained detectable, and there were indicators that Tyranid scout organisms were already present on the world.On the way back from destroying the Genestealer Patriarch, Vail rescued the recently-arrived Ciaphas Cain, who had been ambushed in traffic by Genestealer cultists.As for Killian and Metheius, both Vail and the Tech-priest Lazarus knew that Metheius was holed up somewhere on the planet, and possibly Killian as well. Though partners in the hunt, Vail and Lazarus both hoped to claim the prestige of finding the Renegades and reclaiming the Shadowlight. Both sought assistance from Cain, but as Vail was an old friend (and lover) of Cain's and Lazarus was a stranger, his choice proved an easy one. This was fortunate for Vail, as an uptick in Genestealer Cult activity prevented her from investigating the Renegades herself.In the following solar weeks, Cain was the target of several different assassination attempts. The first of these, an attempt made by a Chaos Sorcerer, led Vail's party to the mining colony Hell's Edge. The colony had been wiped out by Tyranids, but had clearly hosted Metheius' secret laboratory until then, suggesting that Metheius had somehow fallen in with the Chaos Cult to which the sorcerer belonged.Another assassination attempt prompted Cain to visit Gavarrone, home of the Adepta Sororitas' Order of the White Rose, and Vail's retinue came along disguised as his military escort. Unexpectedly, their car was diverted to the Sororitas convent itself.It turned out that the Order of the White Rose was actually in the service of Inquisitor Killian, as the Sisters of Battle were unaware that he was a Renegade. They had served as the military force for Killian's and Metheius's raid on the Valley of Daemons, as well as their escape from Hell's Edge, and they were the hosts of his new laboratory. Killian had decided that trying to kill Cain wasn't working, and hoped to sway the commissar to his own cause instead.Killian revealed to Cain that the Shadowlight had the power to activate latent Human psykers. Once this was discovered, the Ordo Hereticus arguably had a claim on the artefact, but the Tech-priests voted to remain with their original partners in the Ordo Xenos. Metheius disagreed, believing that Shadowlight-activated psyker armies would be the ultimate weapon against the Chaos Gods. He contacted Killian, who he knew was a like-minded Radical, and together the pair destroyed the laboratory-shrine and seized the artefact for their own use. The pair had been hiding on Periremunda since then, using the "Covenant of the Blessed" Chaos Cult to test the artefact's powers.As soon as Cain and Killian were out of view, Vail revealed herself to the canoness of the convent, and informed her of Killian's excommunication. Shortly afterward, she received a frantic vox from Cain, saying that Killian had brought a Tyranid Lictor to the convent, in order to summon a Tyranid swarm that would bury his trail along with the entire plateau. In the battle that followed, Cain, Vail, and their combined party escaped with the Shadowlight, but Killian and Metheius were both killed and the Convent of the White Rose was completely overrun by Tyranids.Vail proceeded to destroy the swarm and the convent alike, by calling in a orbital Lance barrage which cleaved the entire convent grounds off the edge of the Gavarrone plateau. The rest of the Tyranids and Genestealers were finished off not long after this, as an Imperial relief fleet finally arrived. The ancient xenos relic was returned to Perlia, where it remained until the turn of the millennium.Vail's activities over the next several solar decades are mostly unrecorded, except that four standard years after the events on Periremunda, in ca. 937.M41, she eliminated a Hrud infestation.