Black Rent

From SuspireWiki

(n., jargon)

Service or taxed labor owed to a lord, typically in exchange for granted lands, that involves murder, skullduggery or betrayal; less commonly, any corvée (q.v.) demanding shameful or illegal behavior on the part of the vassal. (In this case, illegal is subjective, possibly referring to Kindred Traditions, the Prince’s laws or mortal laws.) “These streets look all right, but some nights, I swear, this place isn’t worth the black rent.”