In January 1963, British journalist Leo Cauffield vanishes from his home in Beirut, leaving his wife Sally in a state of shock. While she was aware of his part-time work for British intelligence, she is unprepared for the British embassy’s alarming claim that he may have defected to Communist Russia. As Sally begins to unravel the enigma of Leo’s disappearance, she delves into their passionate relationship and uncovers his past as the former head of MI6’s counter-espionage division. Her quest for the truth leads her on an intense journey through London, New York, and ultimately Moscow, forcing her to confront the complexities of loyalty, love, and betrayal. Each city reveals new layers of Leo’s life, as Sally grapples with the possibility that the man she thought she knew may have been hiding deeper secrets. Her relentless pursuit not only seeks to find Leo but also to understand the choices that led him to this perilous crossroads.