I'm about to restart my Dark Heresy campaign after my Acolytes royally screwed the pooch and managed to get themselves and Inquisitor Vownus Kaede into some hot water.
They were investigating a strange outbreak of violence in an industrial sector of Hive Volg. They had discovered it's source in a potent new chem circulating in the underworld, that, on closer inspection was found to contain trace amounts of Genestealer DNA. They were closing in on the source of this drug, a Beast House enclave in the depths of the Hive Sump, when disaster struck. Our psyker, who had already caused much annoyance in the party by using his psychic powers for frivolous things despite repeated warnings about the risk to life and limb, got a perils of the warp roll while attempting to pull images from a hiver child with Mind Scan. He had favored of the warp and got two rolls, deamonic possession and warp specters. Now at this point, he could have easily chosen Warp Specters however the player did not want to "scare the kid" so he chose daemonic possession confident that he could resist it. Naturally, he failed the WP check even after burning all his fate points and was possessed. Then as the Acolytes had just finished Illumination, guess who possesses the psyker but old Mr. Sunshine himself, Tsiak the Crow Father.
Meanwhile, the Arbites who had been compromised by the Logicians, decide to reveal themselves , capture the Acolytes and implant them with mind control implants. You remember, the Churgeon from Edge of Darkness? Well she was back all along. Now keep in mind that I had given ample hints that something wasn't quite right at the Arbites Precinct. They seemed all too interested in the investigation, the Precinct's sub-basement was sealed off for no apparent reason yet the Acolytes ignored it.
Then the lone Acolyte the team sent to check on the psyker was ambushed, incapacitated and mind-raped by the deamonhost who then starts hunting down the Acolytes now that he knows everything the Acolyte knew. The Acolytes at the Precint manage to steal a Scarab patrol car, and finally escape after a tense car chase. Then the Acolytes arrive at a Mechanicus temple and the Tech Preist uses his conections as a Sector to call in the Skitarri tech guard to purge the sector.
However, it was too little too late and all the main heretics escaped. So now the Crow Father, a Xenobiologist who is slowly mutating in to a Broodlord and a brilliant Heretek who can implant mind controlling parasites in people are all running free.
Then to top it all off, Witch Finder Rykehuss spots a golden opportunity to eliminate his rival and issues a Carta against Kaede accusing him of heresy, treason and consorting with enemies of the Emperor. The Inquisitor and his retinue have been recalled to the Bastion Serpentis to stand trial.
Any suggestions?
Also, before you ask the player playing the Psyker is no longer part of this group as a result of this incident.