Showing Lion in the Valley by Elizabeth Peters

The 1985-96 season promises to be an exceptional one for Egyptologist Amelia Peabody, her dashing husband Emerson and their precocious eight-year-old son Rameses. The much-coveted burial chamber in Dahshoor is theirs for the digging. Yet there is a great evil in the wind that caresses the hot sands sweeping through the bustling streets and marketplaces of Cairo. An expedition cursed by misfortune and the daring moonlit abduction of Rameses alerts Amelia to the presence of her arch-enemy, the Master Criminal. And his is now a personal quest for the most valuable and elusive prize of all: vengeance on the meddling lady archaeologist with the parasol who has sworn to deliver him to justice...Amelia Peabody herself!