Graham Greene

James Wormold, a cash-strapped vacuum cleaner salesman in Havana, finds the answer to his prayers when British Intelligence offers him a lucrative job as an undercover agent. To keep the checks coming, Wormold must at least pretend to know what he's doing. Soon, he's apparently deciphering incomprehensible codes, passing along sketches of secret weapons that look suspiciously like vacuum parts, and claiming to recruit fellow operatives from his country...