The Human Factor by Graham Greene

A gripping Cold War thriller from the master of espionage fiction. Graham Greene's The Human Factor follows Castle, a British intelligence officer whose loyalty is tested when his past catches up with him. Torn between duty and conscience, he becomes entangled in a dangerous game of deception that challenges everything he believes in. Greene's signature prose weaves psychological tension with moral ambiguity, exploring the cost of betrayal and the fragility of trust. Perfect for readers who crave intelligent, character-driven narratives that linger long after the final page.