Something occurred to me today, while I was reading up on medieval history, about this thread and DAI.
We associate "inquisitions" and "inquisitors" with the Medieval Church's attempts to find and purge heresy (frequently using torture). We think Spanish inquisition, and witch hunts (though technically inquisitors were not supposed to hunt witches as the church kept reminding them).
But in the actual middle ages, the term "inquisitor" was much more broad. In legal systems outside of England's (which was very unique), an inquisitor was a secular title too, and referred to a jurist who was half-judge and half-detective. They would investigate crimes, and then they would judge them.
So "inquisitor" is the closest term the Middle Ages had to "detective." Detectives as we know them wouldn't exist until early-modern France and the Holy Roman Empire in the 1600s, and the Bow Street Runners in England in the 1700s.
So maybe we'll get a detective in the next game too 