May 1941. At four in the morning, a rust-streaked tramp freighter steams up the Tagus river to dock at the port of Lisbon. She is the Santa Rosa, flies the flag of neutral Spain, and is in Lisbon to load cork oak, tinned sardines and drums of cooking oil bound for the Baltic port of Malmo. But she is not the Santa Rosa. She is the Noordendam, a Dutch freighter under the command of Captain Eric DeHaan. She sails for the intelligence division of the British Royal Navy and is involved in a secret mission. On board are a Polish engineer and British spy, Spaniards who fought for Franco and Germans who fought against Hitler. For them, this is a last desperate flight to freedom.

November, 1940. I.A. Serebin, a writer from Odessa and former decorated Hero of the Soviet Union, is on his way to Istanbul following a cryptic letter from a former lover. Ostensibly there on official business for the International Russian Union, an emigre organisation based in Paris, he is drawn into a clandestine world of international spies and political players. With war in Europe drawing nearer, Serebin is recruited by the British secret services — his mission to stop the export of Romanian oil to Germany. In a race against time, Serebin's journey will take him from the glittering salons of Paris to the back alleys of Bucharest and the Black Sea ports, in a covert operation to staunch the flow of oil, the precious 'blood of victory'.

An Autumn evening in 1937. A German engineer arrives at the Warsaw railway station. Tonight, he will be with his Polish mistress; tomorrow, at a workers' bar in the city's factory district, he will meet with the military attache from the French embassy. Information will be exchanged for money. So begins The Spies of Warsaw, with war coming to Europe, and French and German operatives locked in a life-and-death struggle on the espionage battlefield. At the French embassy, the new military attache, Colonel Jean-Francois Mercier, a decorated hero of the 1914 war, is drawn in to a world of abduction, betrayal and intrigue in the diplomatic salons and back alleys of Warsaw. At the same time, the handsome aristocrat finds himself in a passionate love affair with a Parisian woman of Polish heritage, a lawyer for the League of Nations. Colonel Mercier must work in the shadows, amidst an extraordinary cast of venal and dangerous characters — Colonel Anton Vyborg of Polish military intelligence, last seen in Furst's The Polish Officer; the mysterious and sophisticated Doctor Lapp, senior German Abwehr officer in Warsaw; Malka and Viktor Rozen, at work for the Russian secret service; and Mercier's brutal and vindictive opponent, Major August Voss of SS counterintelligence. And there are many more, some known to Mercier as spies, some never to be revealed. The Spies of Warsaw is Alan Furst's finest novel to date — the history is precise, the writing evocative and powerful, more a novel about spies than a spy novel — exciting, atmospheric, erotic and impossible to put down.