Darkenbloom by Eva Menasse

It's 1989, and in a small town on the Austria-Hungary border, nobody talks about the war; the older residents pretend not to remember, and the younger ones are too busy making plans to leave. The walls are thin, the curtains twitch, there is a face at every window, and everyone knows what they are not supposed to say. But as thousands of East German refugees mass at the border, it seems that the past is knocking on Darkenbloom's door. Still, though, nobody talks about the war. Until a mysterious visitor shows up asking questions. Until townspeople start receiving threatening letters and even disappearing. Until a body is found.