Elizabeth Peters - Lion in the Valley (1986)

This is book four in the Amelia Peabody series and the Emerson family is back in Egypt in 1896 to excavate at Dahshoor, where Amelia finally gets her pyramids. Unfortunately the Master Criminal Sethos is back, showering Amelia with gifts and trying to woo her from Emerson in his own underhanded ways. Who said romance was dead?

Along the way Amelia picks up a new set of disgruntled lovers to unite, saves her son Ramses from constant impending doom (usually brought about by his own precocious mind), keeps her husband Emerson from alienating all of Egypt and clears her friends of murder. All the normal run of happenings in an excavation season for Mrs. Amelia Peabody Emerson!

These books are fun and I am rapidly reading my way through them. They make 1890s Egypt sound so romantic and interesting - you don't have to deal with flies, heat, thirst or general travel illnesses. Armchair-book-travel is the best way to go!