Having read several of the Percy Jackson books by Rick Riordan, I found that he was not only well-versed in Greek mythology, but he had an entertaining way of bringing the old gods into modern times.
As I know less about Egyptian mythology than Greco-Roman lore, I was curious about The Red Pyramid. I got a lot of information out of the book without being bored even once.
Carter and Sadie Kane battle Set and other evil creatures during the Demon Days. A few of the good gods - Maat, Horus, Isis - a baboon named Khufu and an albino crocodile called Philip of Macedonia help them. There's also a bunch of magicians who have their own agenda and, for the most part, you don't know whose side they are on through most of the book, but they do make for some interesting complications.
I won't try to cover the same ground as Mr. Riordan except for this: In Egypt, black is a good color because the black soil grows food, while red is the color of death because nothing will grow in the red desert sand. That will give you a hint about the title of the book.