The Kane Chronicles, The Shadow of the Serpent

The apocalypse is approaching - again! And once more, it is up to Sadie and Carter Kane to prevent the end of the world and stop the chaos snake Apophis. But everything would be a bit easier if Thoth, the god of knowledge, didn't always speak in riddles; if the sun god Ra weren't so terribly senile; and if foreign gods didn't constantly interrupt their thoughts. Will the Kane siblings manage to save the world this time as well? The third installment of the Egypt series by Percy Jackson author Rick Riordan.