The Hippopotamus Pool (Amelia Peabody, 8);

When a masked stranger offers to reveal an Egyptian queen's lost tomb to Amelia and Emerson in 1900, they are intrigued to say the least. But the guide mysteriously disappears, leaving them to sail to Thebes to follow his trail. The fact that Ramses and Nefret are along on the journey both helps and hampers efforts to solve this mystery. Soon all four are risking their lives as they foil kidnappers, grave robbers and ancient curses. And intrepid Amelia finds herself faced with a surprising new villain who is every bit as clever and resourceful as she is!