Pharaoh by David Gibbins

Marine archaeologist Jack Howard has made an astounding find in the depths of the Red Sea: proof of a mass suicide by a pharaoh and his army. But what could have driven the most powerful people of their age to hurl themselves to their deaths? What terrible new king, revered as a new god, came to take their place?

Howard’s search leads back through the ages to the discovery of the vault of Tutankhamun in 1928, the legacy of American adventurers in Egypt, the fate of General Gordon’s doomed garrison in Khartoum—and a long-shrouded catastrophe that saw a unit of Gordon’s would-be rescuers swallowed by a mysterious Nile whirlpool. Between the story told by a crazed survivor of that horror, a lost labyrinth, and the truth behind a three-thousand-year-old conflict, Howard is on the verge of a discovery that will change history—for good, for evil, and for the future of all humankind.