The Cold War Swap (McCorkle and Padillo Mysteries, 1)

At the height of the Cold War, two Americans are runnng a bar in the West German capital, called Mac's place. One of the pair, Michael Padillo, isn't around a lot; he keeps disappearing on "business trips." McCorkle, his partner, wisely doesn't ask questions; he knows Padillo has a second job -- he's a (reluctant) US agent. But McCorkle is ready to answer a call for help from Padillo, and he joins his friend in a blind journey with no inkling of what they will encounter at the turn of each dark and dangerous corner.