After 10+ years, I still don't know how to do this puzzle and feel I just get lucky every time I solve it.

Discerning the Transmundane

If Black Sacrament was performed on Harkon would the Dark Brotherhood take the contract and what amount of money would they ask for it?

I'm going to kill that bard.

So this is the first time I've ever got the hired muscle quest in over 1k hours, and its to beat Carlotta into submission? Nah, I think that bard is behind this, "on my honor" he says. The Companions might not be mercenaries, but thugs? That they might just be. I ain't hurting that window and single mother without good cause. And a few measly coins ain't good cause. I suppose it could be Nazeem, but if the Companions are accepting jobs from him... we'll that doesnt exactly help their case, does it. Either way, every radiant quest i get that involves a named NPC its always her. Dawnguard is especially fond of this, having her be abducted by vampires and warlocks.