Chapman Pincher called Sonya the most successful agent-runner of all time, but this daring, courageous woman has remained an enigma, hunted and maligned by the spy-writers of the West. In this book, she tells her own story. She describes her youth in Germany, Shanghai in the 1930s, training in Moscow, radioing at night on home-built transmitters from Japanese Manchuria and running networks in Poland and Switzerland. In the midst of war, with three children, she came to Oxford, to work within earshot of M15 and she helped Klaus Fuchs to pass the West's atomic secrets to Moscow. Sonya's Report is now translated for the first time with new material on the Fuchs affair and on her feeling about her life's work.