Melbourne, 1938. Annabel's dream is to be a scientist. Falling in love is not part of her plan. But when she meets Bill Whitten she knows instantly that they are destined for each other. She has to wait for him to come back from the war. Their life together, as lovers and microbiologists, can now begin. The newlyweds emigrate to New York. They are at once captivated by fellow immigrants Frank, an ex-Communist from Hungary, and his playwright wife, Suzy. It's the 1950s and the Cold War is in full swing. Frank, Annabel and Bill find work on weapons projects, experimenting with lethal infectious diseases. Did they cross the world for this? Annabel's whole being is anchored in her ardour for Bill, and their work together. But other forces - suspicion, paranoia, deceit - are at play. Everything begins to unravel- her work, her career and her marriage. With its backdrop of science and politics Who We Were is a love story to be reckoned with, an intimate and powerful first novel about trust, obsession and the truth itself.