Somewhere in shadowy post-war Vienna, where everyone has something to sell on the black market, lurks "the third man", who witnessed the murder of Harry Lime. The police don't care to investigate, but novelist Holly Martins is haunted by the death of his friend, and his search for the killer makes for electrifying drama.

Graham Greene explores corruption and atonement in this penetrating novel set in 1930s Mexico during the era of Communist religious persecutions. As revolutionaries determine to stamp out the evils of the church through violence, the last Roman Catholic priest is on the lam, hunted by a police lieutenant. Despite his own sense of worthlessness—he is a heavy drinker and has fathered an illegitimate child—he is determined to continue to function as a priest until captured.

A leak is traced to a small sub-section of the secret service, sparking off the inevitable security checks, tensions and suspicions. The sort of atmosphere, perhaps, where mistakes could be made? For Maurice Castle, it is the end of the line anyway, and time for him to retire to live peacefully with his wife and child. But no-one escapes so easily from the lonely, isolated, neurotic world of the SIS.

A young boy, Victor, is collected from school by a stranger in a bowler hat - the stranger says he has won Victor in a game of backgammon with Victor's father. The stranger, known as the Captain, takes Victor to live with the sweet but withdrawn Lisa, where he serves as her conduit to the outside world. From mysterious beginnings, Graham Greene's final novel becomes a twisting thriller of smuggling, jewel theft and international espionage which culminates in a dramatic showdown in Panama.

A police commissioner in a British-governed, war-torn West African state, Scobie is bound by the strictest integrity and sense of duty both for his colonial responsibilities and for his wife, whom he deeply pities but no longer loves. Passed over for a promotion, he is forced to borrow money in order to send his despairing wife away on a holiday.