Fog experiment

Exploration Stage: Angel Statue
From: Martha
Description: The spirits are getting anxious. I heard that you and Jacob conducted a dangerous experiment to try to get to the city. Oh, my God... you tried to create a device that creates fog! Let me see it!
Completed: Oh, good. So it's just a normal fog that this device produces. But how did Jacob know about the strange fog that exists in the City of Shadows? He too had lost his memory and could not explain how he knew about the fog? That's strange...