The Attache's Vow: A Deception Written In Diplomacy

Cultural attaché Elena Marchand has spent her career keeping her real work invisible. When a catastrophic dead drop in Vienna costs her mentor's life and vanishes a piece of intelligence known only as the Kessler Ledger, Langley's solution is unthinkable: marry her into the Austrian Foreign Ministry through trade attaché Damian Kovarik a man with a hidden service of his own, and a missing sister he's never stopped searching for.
What begins as a legend of convenience a wedding staged for cameras, a household built on rules neither of them trusts the other to keep becomes the most dangerous operation either has ever run, as the two discover their marriage was never as unmonitored as they believed. Somewhere between the tradecraft and the truth, the vow they made to protect their covers becomes one neither is willing to break.
A romance espionage thriller of diplomatic secrets, institutional betrayal, and a love that has to survive being someone else's operation first.