Through interviews with his daughter Dorothy, the film explores Sadler’s role in organising pacifist initiatives on Tyneside during the interwar years. As Europe moved from the hope of post-1918 peace through the failures of the League of Nations to the outbreak of another global conflict, Sadler’s refusal to support any form of war became a defining stance. Dorothy, who joined him in opposing war in the 1930s, offers a personal insight into the beliefs that shaped their lives.

Sadler’s legacy is presented as one rooted in a deeply held belief that socialism offered the only hope for peace, and in a Christianity sharply critical of the Church establishment. In the 1980s, Amber interviewed several figures from the Tyneside Left active during the 1920s, 30s and 40s, placing Jack’s Story within a wider exploration of radical traditions in the region. More of these interviews can be found in our T Dan Smith Archive and No Pasaran interviews.