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> The Human Factor on BBC One at 2007-12-18 23:55:00
Adaptation of Graham Greene's novel about a low-ranking secret service agent who is conned into supplying information to eastern bloc countries. Adult themes. 
> The Human Factor on BBC Four at 2006-08-26 21:10:00
An MI6 agent approaching retirement struggles with questions of loyalty and conscience in Tom Stoppard's adaptation of Graham Greene's novel. With Richard Attenborough and John Gielgud.