Note: This guide works for both The Elder Scrolls IV: Oblivion and Oblivion Remastered.
In Oblivion, no guild is as secretive or as deadly as the Dark Brotherhood. This ancient assassin's guild isn't like the other factions in Oblivion in that you can't just walk up to their front door and ask to join—it's pretty hard to even find their front door in the first place.
