Books like A Life in Secrets by Sarah Helm

William E. Dodd, America's first ambassador to Nazi Germany, arrives in Berlin in 1933 to chronicle the early rise of Hitler—and the diplomatic tightrope his nation must navigate.

A biography of Oleg Gordievsky, the Soviet double‑agent who, while working undercover in the KGB, supplied MI6 with critical intelligence that accelerated the collapse of the Cold War.

During the Second World War, MI5 and British naval intelligence engineer Operation Mincemeat—feigning an invasion of Greece and Sardinia by sending a corpse laced with false documents off the coast of Spain to trick the Nazis and pave the way for the invasion of Sicily.

"Six gentlemen, one goal: the destruction of Hitler's war machine. In the spring of 1939, a top-secret organization was founded in London: its purpose was to plot the destruction of Hitler's war machine through spectacular acts of sabotage. The guerrilla campaign that followed was every bit as extraordinary as the six men who directed it. One of them, Cecil Clarke, was a maverick engineer who had spent the 1930s inventing futuristic caravans. Now, his talents were put to more devious use: he built the dirty bomb used to assassinate Hitler's favorite, Reinhard Heydrich. Another, William Fairbairn, was a portly pensioner with an unusual passion: he was the world's leading expert in silent killing, hired to train the guerrillas being parachuted behind enemy lines. Led by dapper Scotsman Colin Gubbins, these men--along with three others--formed a secret inner circle that, aided by a group of formidable ladies, single-handedly changed the course Second World War: a cohort hand-picked by Winston Churchill, whom he called his Ministry of Ungentlemanly Warfare. Churchill's Ministry of Ungentlemanly Warfare is a gripping and vivid narrative of adventure and derring-do that is also, perhaps, the last great untold story of the Second World War"--

During the early Cold War, newly minted Lieutenant James D. Cronley Jr. is recruited by a fledgling intelligence effort that becomes the CIA, tasked with hunting Soviet spies and surviving the perilous world of espionage.