Message from the other world

Betrayed by their cousins, abandoned by their uncle, with uncertain and vague instructions in their hands, fourteen-year-old Amy and her younger brother, Dan, decide to go to Egypt in pursuit of the 39 clues, which will lead the winner of the adventure to an indescribable, unimaginable power. However, upon arrival, they find a surprise waiting for them - a message from their deceased grandmother, Grace. Will Grace truly help the two orphans... or will Amy and Dan experience the worst betrayal of their lives?