Patty and Walter Berglund were the new pioneers, the hands-on parents, the avant-garde of the Whole Foods generation. Patty was the ideal neighbour who could tell you where to recycle your batteries, an enviably perfect mother and the wife of Walter's dreams. Together with Walter – environmental lawyer, commuter cyclist, family man – she hoped to build a better world. But now, the Berglunds have become a mystery. Most of all, what has happened to poor Patty?