"'There's a man around who as a young Stasi officer drew the line along the street where the Wall would be built, and he's prepared to talk about the whole thing. His name is Hagen Koch"

This book review from the New York Times describes Hagen Koch's role in the planning and construction of the Wall, and reveals the twist in the tale... that he was also put in charge of its destruction after 1989, as well as safeguarding memorials of the era. Hagen Koch has published a significant collection of photographs from his extensive Wall Archive in The Berlin Wall: Division of a City, co-authored by Thomas Flemming.

Anna Funder describes her first meeting with Hagen Koch on page 155.