Istanbul Passage

This is an okay book written by Joseph Kanon. A neutral city straddling Europe and Asia, Istanbul has spent World War II as a magnet for refugees and spies. Even American businessman Leon Bauer has been drawn into this shadow world, doing undercover odd jobs and courier runs for the Allied war effort. Now as the espionage community beings to pack up and an apprehensive city prepares for the grim realities of post-war life, he is given one more assignment, a routine job that goes fatally wrong, plunging him into a tangle of intrigue and moral confusion.