High Quality Content by WIKIPEDIA articles! Operation Epsilon was the codename of a program in which Allied forces near the end of World War II detained ten German scientists who were thought to have worked on Nazi Germany`s nuclear program. The scientists were captured between May 1 and June 30, 1945, and interned at Farm Hall, a bugged house in Godmanchester, England (near Cambridge), from July 3, 1945 to January 3, 1946. The primary goal of the program was to determine how close Nazi Germany had been to constructing an atomic bomb by listening to their conversations.