**A daring CIA operation threatens chaos in the Kremlin. But can Langley trust the Russian at its center?** CIA officers Sia and Max enter Russia under commercial cover to recruit Vladimir Putin’s moneyman. Sia works for a London law firm that conceals the wealth of the superrich. Max’s family business in Mexico—a CIA front since the 1960s—is a farm that breeds high-end racehorses. They pose as a couple to target Vadim, Putin’s private banker, and his wife, Anna, who—unbeknownst to CIA—is a Russian intelligence officer under deep cover at the bank. As they descend further into a Russian world dripping with luxury and rife with gangland violence, Sia and Max’s only hope may be Anna, who is playing a game of her own. Careening between the horse ranch in northern Mexico, the corridors of Langley, and the dark opulence of Putin’s Russia, *Moscow X* is both a gripping thriller of modern espionage and a raw, unsparing commentary on the nature of truth, loyalty, and vengeance amid the shadow war between the United States and Russia.