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The Human Factor

by Graham Greene

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Audio available 3.9

Maurice Castle works quietly in the African section of British intelligence and appears to be an unremarkable civil servant. His marriage to Sarah, a Black South African woman whom he helped escape apartheid, conceals the debt that led him to pass information to the Soviet Union.

When a leak is detected, suspicion falls on Castle’s colleague Davis and the service responds with bureaucratic violence rather than certainty. Castle must decide whether to continue helping the network that once protected Sarah or preserve his family by defecting. Espionage is presented as an accumulation of personal obligations within institutions that treat human loyalty as a security weakness.