Talia Inger is a rookie CIA case officer assigned not to the Moscow desk as she had hoped but to the forgotten backwaters of Eastern Europe–a department only known as “Other.” When she is tasked with helping a young, charming Moldovan executive secure his designs for a revolutionary defense technology, she figures she’ll be back in DC within a few days. But that’s before she knows where the designs are stored–and who’s after them. With her shady civilian partner, Adam Tyler, Talia takes a deep dive into a world where only criminal minds and unlikely strategies will keep the Gryphon, a high-altitude data vault, hovering in the mesosphere.

Even Tyler is more than he seems, and Talia begins to wonder: Is he helping her? Or using her access to CIA resources to pull off an epic heist for his own dark purposes?