Moscow Moles is the fourth spy suspense/thriller in the Moscow Nights Series. Through the eyes of spies and assassins from Russia, America and the United Kingdom, the reader travels to London, Wales, DC, New York City, and Mexico. The book opens in the middle of the Russian-Ukrainian war, with the protagonist, Charlie Burlamachi, having dispensed with a double agent and traitor. Charlie is ex-military and has been trained by Elda Ainsworth, who is missing, presumed dead, a fact that Charlie refuses to believe. Charlie joins forces with MI6 agent, Sophia Brown, and works with ex-Russian spies and assassins, Anatoly Petrov and Snezhana Chelovek to thwart a Russian mission designed to sow chaos in the West. Snezhana's uncle and mentor, Tosh Chelovek, is also missing and presumed killed by Elda. Elda and Tosh have been happily "dead," living in a villa in Tuscany, biding their time and searching for the remaining agents that killed members of their team during Operation Bittman. They elaborately faked their deaths to free themselves up to find the leaks in their organizations. Now that the search for them is over, they decide it is time to bring the old combined team together and aggressively go after the moles. Boris Siderov sits high up in the Kremlin ranks and dispatches new assassins, Nyoka Morozov, Murka Krovopuskov, and Dmitri Smirnov, as well as activates sleeper cells to help achieve his objectives. The spies on both sides use Cold War techniques, technology, and brute strength to identify and evade their prey.