The Hippopotamus Pool — Elizabeth Peters

A masked stranger offers to reveal an Egyptian queen's lost tomb ... and Amelia Peabody and her irascible archaeologist husband are intrigued, to say the least. When the guide mysteriously disappears before he tells his secret, the Peabodys sail to Thebes to follow his trail, helped--and hampered--by their teenaged son, Ramses, and beautiful ward, Nefret. Before the sands of time shift very far, all will be risking their lives foiling murderers, kidnappers, grave robbers, and ancient curses. And the Hippopotamus Pool? It's a legend of war and wits that Amelia is translating, one that alerts her to a hippo of a different type--a nefarious, overweight art dealer who may become her next archenemy!