**Sunday Times Number One Bestseller**A classic tale of murder and deceit from one of the world’s best storytellers – ‘a masterpiece’ The TimesTrudy has betrayed her husband, John. She's still in the marital home – a dilapidated, priceless London townhouse – but not with John.

The year is 1972, the Cold War is far from over and Serena Frome, in her final year at Cambridge, is being groomed for MI5. Sent on Operation Sweet Tooth – a highly secret undercover mission – she meets Tom Haley, a promising young writer. To answer these questions, Serena must abandon the first rule of espionage – trust no one.

A brilliant, emotionally wrenching new novel from the author of Atonement and Amsterdam. Fiona Maye, a leading High Court judge, renowned for her fierce intelligence and sensitivity is called on to try an urgent case.