"Trying to satisfy what appears to be an insatiable curiosity and quest for knowledge," Holmes responded in his assessment of the Doctor preceding them. He strode toward the fog and frowned, glancing at James.
"Tell me, doesn't it seem as if the fog's grown much closer to us? I do believe it's creeping in our direction and expanding in size. What do you think?"
The previous evening when they had set up camp, that fog seemed to be perhaps half a day's journey from them but now, it wouldn't take nearly as long to get there or he was hallucinating.