No; it is quite clear.

At this point on the edge of the bank there was no third person.
We are dealing with only two men--Colonel Gaylord and his murderer; and the murderer was bare-footed." "Mose ?" I asked.
"No," said Terry, patiently, "not Mose." "Then who ?" "That--remains to be seen.

I will follow him up and find out where he comes from." Terry held his candle close to the ground and followed along the path.
At the entrance to the little gallery of the broken column it diverged, one part leading into the gallery, and the other into a sort of blind alley at one side.

Terry paused at the opening.
"Give me some more calcium light," he called to the guide.

"I want to look into this passage.