In the high-stakes world of Cold War espionage, an unassuming British businessman becomes an unlikely pawn in a deadly game. Benedict Cumberbatch stars as Greville Wynne, a man whose mundane life of international sales is upended when he is recruited by the CIA and MI6 for a perilous mission. Alongside a determined CIA operative played by Rachel Brosnahan, Wynne is tasked with making contact with a high-level Soviet source, Merab Ninidze as Oleg Penkovsky, who is desperate to prevent nuclear catastrophe. This tense drama-thriller, directed by Dominic Cooke, weaves a gripping narrative of courage and sacrifice as an ordinary man is thrust into the shadowy corridors of power. With the ever-present threat of exposure by the KGB looming, Wynne must navigate a labyrinth of deception, where one wrong move could ignite a global conflict and cost him everything, including his relationship with his wife, portrayed by Jessie Buckley. Based on an incredible true story, the film masterfully builds an atmosphere of paranoia and palpable dread, exploring the immense personal cost of heroism in a world on the brink.