Betrayed by their cousins, abandoned by their uncle, and with only the slimmest hint to guide them, fourteen-year old amy cahill and her younger brother, dan, rush off to egypt on the hunt for 39 clues that lead to a sou...Betrayed by their cousins, abandoned by their uncle, and with only the slimmest hint to guide them, fourteen-year old amy cahill and her younger brother, dan, rush off to egypt on the hunt for 39 clues that lead to a source of unimaginable power. But when they arrive, amy and dan get something completely unexpected - a message from their dead grandmother, grace.