Geoff Perry and the Kettering Group is the true story of a British physics teacher who, together with his pupils in the 1960s, revealed that the Soviet Union was launching satellites into space from a clandestine location. Perry turned his satellite-watching hobby into a student-focused group, supplemented by observers around the world, that revealed numerous secrets about the USSR's space program. He became a widely recognized and trusted authority on all aspects of Soviet space activities in the midst of the Cold War. His impact on both his students and international relations was significant: Perry felt that his work not only promoted science literacy, but by exposing the truth, it also helped reduce mistrust between the two superpowers of the era.