Finale of the Red Sparrow trilogy, in which the CIA's Nate Nash and a Russian agent are caught up in a harrowing scandal involving Russia's blackmail against the newly elected US President. Russian counterintelligence chief Colonel Dominika Egorova has been a recruited asset of the CIA, stealing Kremlin secrets for her CIA handler Nate Nash for over seven years, while their forbidden and tumultuous love affair continues. In Washington, as a newly-installed US administration is selecting its Cabinet members, Dominika hears a whisper of a closely-held Kremlin operation to place a mole inside a high intelligence position. One of the three candidates under consideration has been a paid Russian spy for a decade, selling precious US secrets. If the Kremlin's candidate for the position is confirmed, the Russians will have access to all the names of assets spying for CIA in Moscow, including Dominika's. But which of the three individuals is the mole?