In 1953, Ethel and Julius Rosenberg were sentenced to death by electrocution and died side-by-side: Julius after one shot of electricity, Ethel after three. They left behind two small children. Their crime? Conspiracy to spy for the Soviet Union. UCL's Dr Josh Hollands joins Katie and Tom again to explain why their case shook the world, pulling in the likes of Frida Kahlo, Einstein, Jean Paul Sartre, and Barack Obama.
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