In the darkest days of the Italian labour movement in the early 1930s, shortly after Mussolini had consolidated his grip on power, and as many Italian Communists and Socialists languished in fascist prisons or were forced to live in exile, a small group of Communist Party members, including three Central Committee members, turned to Trotsky as they attempted to build an opposition to the Stalinist leadership of Togliatti. Here we publish five letters of Trotsky to the newly formed group.