"The Heart of the Matter" is a novel by Graham Greene that explores themes of morality, faith, and the complexities of human relationships. The story follows Scobie, a British colonial officer in Sierra Leone during World War II, who struggles with his sense of duty and personal beliefs. As Scobie faces moral dilemmas, he becomes increasingly conflicted about his actions and their consequences. The narrative delves into his internal struggles, highlighting the tension between love, guilt, and the search for redemption in a world filled with uncertainty and despair.