Welcome to Dunwall... again.
There's one particularly jaw-dropping event in Dishonored that sets the gears of Corvo's quest in motion, and a man named Daud is primarily responsible. The Knife of Dunwall, Arkane's substantially-sized single-player add-on, puts you in the shoes of this villainous character following the shocking murder of one unforgettably pivotal individual—if you've played the first hour of the main game, you'll know exactly who I'm talking about.
At first I was a bit puzzled as to why the developers decided to put you in the shoes of a completely different character, but after spending just a few minutes with the game, it all became clear. The universe that Arkane has created with Dunwall is full of mystery and intrigue, and getting to see that through the eyes of a completely different character casts a whole new light on the city. Better yet, Daud has an interesting personality and speaks quite often, giving the player a better sense of the person they're playing as. I'd even go so far as to say that I find him more compelling than Corvo.