Sam Carr walked out of the Don Jail on a crisp autumn day in 1942. He had been living underground for two years, and detained for the previous month. While the Canadian government was concerned that Carr and his Communist comrades would hamper the war effort, this kind of disruption had not been their goal ever since Germany invaded the Soviet Union in 1941. Carr now wanted to mobilize the Canadian public — advocating for conscription, no-strike pledges from unions, and the immediate invasion of Europe — in order to preserve the “Workers’ Paradise.” And he would not stop there. Less than a month after his release from prison, Carr began recruiting spies for Soviet military intelligence.