Excerpt from an Overseer Interrogation Report is a written note found in Dishonored 2.
Brother Bernardus: Where did you find those drawings?
Accused: I made them. As I said, I'm an artist. Mostly newspaper advertisements.
Brother Bernardus: These don't look like advertisements. They look like heretic nonsense intended to make your neighbor sick, or bring back a loved one.
Accused: Nothing will dissuade you of these notions, I'm sure. So instead of wasting my breath, I'll give you some advice. Take a bath once in a while, Overseer. And invest in some scented soap, unless that's against one of the Strictures.
Conclusion: Apparently, the accused suffered from a weakened heart, dying during the interrogation without providing anything further. His apartment on the canal should be searched for items or drawings of a profane nature.