Dishonored, The Mass Effect/Assassin’s Creed Love Child

Well my titled pretty much explains it, but check out this awesome cinematic trailer for Dishonored. He’s got his Ezio type style mixed with his Shepard biotic type powers. My question is when the hell does this game take place? From what I can tell the black plague is back in an alternate 1930′s timeline. Just a guess. Coming from Bethesda I’m positive I can expect good things. Survey goes to the nerds, what do you think?