Falcon of Abydos: Oracle of the Nile — Richard Trout

The shifting sands of the Sahara reveal a secret that could forever change the history of Egypt. Dr. Jack MacGregor and his family, fresh from adventures in the Caribbean and East Africa, arrive in Cairo and soon find themselves embroiled in a battle against evil men who possess an insane desire for power. From the insufferable heat of the Sahara Desert to the exotic underwater world of the Red Sea, parents Jack and Mavis and their teenage children, Chris, Heather, and Ryan, experience another series of dangerous adventures in this techno-thriller novel for middle readers.