"Calla Cress is a top-notch spy for the International Security and Treaty Force (ISTF), but her latest mission hits close to home. She's been tasked with finding a missing museum curator, Dr. Octavia Steward, who just happens to be Calla's former archaeology professor.
But when Calla begins to investigate, she quickly realizes there's more at stake than the curator's disappearance. Octavia has disappeared with classified information on the lost City of Atlantis of the Sands, a city rumored to hold secrets and powerful artifacts that could be used for mankind's benefit or destruction."