I am quite sure that she was _not_ drowned; that she is living at this moment." "Where ?" "As to that you had better inquire of our friends, Harut and Marut," I answered dryly.
"What have you to go on, Quatermain?
There is no clue." "On the contrary I hold that there are a good many clues.

The whole English part of the story in which we were concerned, and the threats those mysterious persons uttered are the first and greatest of these clues.

The second is the fact that your hiring of the dahabeeyah regardless of expense was known a long time before your arrival in Egypt, for I suppose you did so in your own name, which is not exactly that of Smith or Brown.

The third is your wife's sleep-walking propensities, which would have made it quite easy for her to be drawn ashore under some kind of mesmeric influence.

The fourth is that you had seen Arabs mounted on camels upon the banks of the Nile.