5 Fingers (1952) James Mason

Based on a true story. In neutral Turkey during WWII, the ambitious and extremely efficient valet for the British ambassador tires of being a servant and forms a plan to promote himself to rich gentleman of leisure. His employer has many secret documents; he will photograph them, and with the help of a refugee Countess, sell them to the Nazis. When he makes a certain amount of money, he will retire to South America with the Countess as his wife.