Salem got a bit of an update today. You can head over to the Paradox forums to check it out. The crime and punishment system they have going is very interesting, I'll have to do a post on it sometime. For now, here is part of the changes to wet your whistle.
Summoning: Whenever you pick up a scent from a summonable crime you will receive a piece of evidence of the particular crime. The evidences can be matched against other evidences to determine if they were left by the same perpetrator by holding one piece of evidence and right-clicking on another. When you have tracked the homestead of the perpetrator, hold the evidence and right-click on his or her homestead to summon the perpetrator into the game and open a combat relation. Proceed to execute for great justice.