I do love these books.
This the sixth in the series returns our heroes to their present after the flashback that was O Jerusalem. That sentence doesn’t really make much sense, but figure it out, think of it as a challenge :) Holmes & Russell have just returned from The Moor and are settling back in at home when their comes a disturbance at their door. Ali Hazr has shown up, with a head wound and wanting their assistance. He needs their help with Mahmoud, his “brother”. Of course Holmes had already pointed out that neither of the two arabs they were travelling with were actually from that region, but it is, nevertheless, a surprise to learn where they come from and just what an aristocratic name both bear.