I give up.
I don't care if they catch the "Arab" (who I think is actually Egyptian, but it was 1897).
I don't care if the Arab is male or female.
I don't care if Marjorie gets burned alive as a human sacrifice to Isis.
I don't care if Lessingham has complete mental and emotional breakdown.
I thought I would be able to at least skim to the end, but I just could not care less what happens to anyone.