Greene divided his prolific output into "entertainments"—fast-paced thrillers—and more serious works exploring moral ambiguity in politically troubled settings, drawing on his travels to Mexico, Vietnam, Africa, and the Caribbean.
His major novels include Brighton Rock (1938), The Power and the Glory (1940), The Heart of the Matter (1948), The End of the Affair (1951), The Quiet American (1955), Our Man in Havana (1958), The Comedians (1966), and The Human Factor (1978). He also wrote the screenplay for the classic film The Third Man (1949). Though nominated repeatedly for the Nobel Prize in Literature, he never received it. Greene died in Vevey, Switzerland, in 1991, leaving a lasting legacy in modern fiction.