Bugs of God + the system saves the game. (Dishonored 2)

Have someone save the job the Grand Palace?

My ruined due to the wonderful bug.
http://s017.radikal.ru/i419/1611/69/f580b61ff112.jpg
All the time the NPC for the quest will spawn under the stairs.

approximate address to save:
C:\Users\Username\Saved Games\Arkane Studios\dishonored2\base\savegame

I would be very grateful.