"Ten years ago, there was a demonic attack on his family's estate at Heaven's Edge, which killed his parents, their bodyguards and servants, and several other members of the Mendevian nobility who were present as guests. The widely-believed account is that a group of demons attacked the estate and spread a terrible disease, which killed everyone there but the Count, who was saved from the disease by the manifestation of his healing powers and concealed himself in the cellar. The investigation at the time was rather haphazard — this was shortly after Fort Godwin fell — and many questions were left unsettled."
He sweeps the room again with Detect Magic.
"There are reasons to believe that account to be... incomplete, and in places outright false. The demons were found dead, having been beheaded, with no clear explanation for why. The observations that were made at the time suggested that this had taken place over several hours, but we found no sign of any attempt at sending help to Kenabres, not even a failed attempt thwarted by the demons. Multiple of the guests present were paladins of sufficient power to be immune to disease, none of whom survived. Select Nestrin, who had tutored the Count, was present and is believed to have fallen victim to the disease, casting doubt on the possibility that the Count's survival was simply a miracle.
The primary reason I am warning you is the fact that multiple people who voiced suspicion were subsequently found dead in their sleep, having been beheaded, in one case while sleeping inside a locked room warded against teleportation. In every case I know about, they had expressed suspicion in the Count's presence; I have privately expressed suspicion to other inquisitors, and have not suffered similar consequences. I don't believe him to have personally murdered them — in one case he subsequently testified under an Abadar's Truthtelling that he was asleep at the time and did not kill the victim — but I nevertheless consider this to be a concerning pattern."