Hallway. Pretend the ghost isnt there and just keep walking.
You ignore the incorporeal being and make your way closer to the center of the capital.
Gordan: "The next room should lead us directly under the town square."
Noxia: "Of course, there hasn't been anything impeding us for a while, we should expect a battle soon. Perhaps against those out-of-place torches over there."
Gordan: "I'd have to admit I haven't seen much gold within these passageways yet."