The present-day action in my novel Pharaoh opens with Jack Howard and his IMU team diving deep into the Mediterranean in search of a 19th century shipwreck thought to contain a fabled sarcophagus from ancient Egypt. Their search is based on fact: the ship was the Beatrice, a British merchantman lost in 1838, and the sarcophagus was the stone coffin of Menkaure, pharaoh of the 4th Dynasty of the Old Kingdom who died about 2500 BC. Only months before the wrecking the sarcophagus had been found in the Pyramid of Menkaure ...