A new historical account by author Ben Macintyre explores the remarkable true story of Vladimir Kuzichkin, a KGB spy who defected to Britain following a dramatic escape from Iran during the early 1980s. Titled Redwood, which served as Kuzichkin's codename, the book examines the intersection of espionage tradecraft and human psychology during a pivotal moment in history.

Stationed as a senior officer within the KGB rezidentura in revolutionary Tehran, Kuzichkin watched the collapse of the Shah's regime and the rise of a chaotic new order. While he harbored growing grievances against the corruption and brutality of the Soviet regime, his ultimate path toward treason was heavily influenced by deeply personal challenges, including a failing marriage and erectile dysfunction. Seeking assistance, he approached MI6.

In response, British intelligence operatives supplied him with vitamin placebos designed to act as red pills and placate the distressed officer. Kuzichkin also made unusual demands of his new handlers, asking for both a security-cleared astrologer and a vetted circumciser, believing the latter procedure performed on an auspicious date would resolve his medical concerns. His formal recruitment into MI6 was eventually sealed over large quantities of vodka.

The book highlights the often improvisational and bumbling nature of espionage alongside its high-stakes reality. Ian McCredie, the MI6 case officer handling Kuzichkin, attempted to evade Iranian wiretaps by running water taps and blaring Persian radio. Later, during Kuzichkin's escape through Turkey, British intelligence prepared for potential KGB snatch squads by deploying an officer equipped with a heavy brass lamp to fend off attackers.

The KGB fundamentally miscalculated British operations in Tehran, incorrectly suspecting that the flamboyant British ambassador, Nicholas Barrington, was the secret head of the MI6 station. In reality, Barrington viewed the intelligence service with indifference and played no role in their activities, leaving the understated McCredie to manage the operation.

The intelligence provided by Kuzichkin proved consequential for Iranian history. Out of concern over a potential Soviet-backed communist takeover, Western intelligence shared Kuzichkin's insights regarding communist networks with the ruling Iranian regime. This intelligence triggered purges resulting in thousands of executions, which effectively crushed much of the political opposition and solidified the Islamist regime's grip on power.

Kuzichkin reportedly spent his later years haunted by the mass executions that followed his disclosures before passing away in 2009. While official MI6 cooperation was absent for the book, case officer McCredie provided extensive interviews to the author, alongside insights from other living personnel, resulting in a detailed look into Cold War espionage.