In the midst of the Manhattan Project during World War II, these four men betrayed the country — delivering atomic bomb secrets to Stalin. Just four years later, the Soviet Union tested Joe-1, a copy of the United States’ Fat Man atomic bomb. “Secrets in the Shadows” takes a deep dive into this real-life spy thriller featuring exclusive interviews and never-before-shared historic materials. Discover how these acts of treason shaped the Cold War, and what they mean for counterintelligence today. With insights from historians, scientists and counterintelligence professionals, “Secrets in the Shadows” reveals a hidden chapter in American history.