Egyptologist and millionaire Amelia Peabody Emerson is back in Egypt hunting down tomb robbers, uncovering antiquities fraud, and meddling in the life of her son Ramses.
In 1917, with war raging in Europe, Amelia and her family return to Egypt for an extensive archaeological dig after learning that another tomb has been desecrated by thieves. Hot on the robber's trail, Amelia's family is thrown into disarray when her son, Ramses, is called away by the British government for a covert operation in Gaza, the gateway to the Holy Land.
As a spy, Ramses accepts the assignment, but his meddling mother is lurking not far behind. Dressed in disguise, Amelia, her husband Radcliffe and Ramses' wife Nefret embroil themselves in this perilous caper that places them all on the path of mortal danger.