Merry Pink and Adam Tennyson are now the proud owners of a newly restored Victorian dahabeeyah moored on the banks of the Nile in Luxor. Their plan is to offer luxury Nile cruises for people drawn to Egypt by the lure of nostalgia as well as the wonders of antiquity. But the tourist trade in Egypt is taking a long time to recover from the revolution of the Arab Spring, which toppled the Mubarak regime. So Merry and Adam jump at the chance of playing host to a genuine fee paying guest who does not expect to be cruised up and down the Nile. Ben Hunter is in Luxor to attend a lecture by a famous historian and writer who claims some of the key Old Testament figures of the Bible were in fact ancient Egyptian pharaohs. Ben has a letter from an old lady once close to the deposed King Farouk stating she knows the whereabouts of an ancient parchment scroll which proves the writer's claims. Intrigued, Merry and Adam join Ben on his quest to find the old lady and discover whether the explosive link between the Bible and Pharaonic history is for real.