Jana Hensel was thirteen on November 9, 1989, the night the Berlin Wall fell. In all the euphoria over German reunification, no one stopped to think what it would mean for Jana and her generation of East Germans. These were the kids of the seventies, who had grown up in the shadow of Communism with all its hokey comforts: the Young Pioneer youth groups, the cheerful Communist propaganda, and the comforting knowledge that they lived in a Germany unblemished by an ugly Nazi past and a callous capitalist future.

Suddenly everything was gone. East Germany disappeared, swallowed up by the...