Hopi and Isis must aid a captured Libyan girl amidst the political intrigues of ancient Egypt. In 1150 BC, young Hopi and Isis find their lives entangled with a Libyan girl who has been taken prisoner. Their quest to help her unfolds against the backdrop of meticulously researched Egyptian life, where the gods hold immense sway and the pharaoh's court is rife with hidden dangers. The narrative framework follows the children as they navigate the physical and social constraints of their world, seeking to overcome the forces that seek to keep the girl captive.

The Deathstalker is presented as an exciting adventure story encased in fantastically atmospheric evocations of Egyptian life. It is designed to appeal to the same readership as the bestselling The Roman Mysteries series. The narrative focuses on the struggles and adventures of the boy and girl characters, Hopi and Isis, in Egypt circa 1150 BC. The author's extensive time spent in Egypt ensures meticulous research, promising readers both an engaging plot and authentic historical detail about Egyptian lifestyle and beliefs.