‘Tantalising’ Sunday Times‘Thoroughly enjoyable’ Guardian‘Irresistibly charged’ Mail on SundayNo one looks twice at the women in the typing pool.No one knows that two of them are trading secrets.The secret is a book, the size of the one in your hands, and within its pages, a love story that could change the world.But where there is love there is pain. And where there is deception, formidable danger…‘Mixing Mad Men and John le Carre … addictive’ i paper‘Utterly compelling… I absolutely loved it’ Sarah Winman