The British and Americans were suspicious that there was a mole. They were right; in fact, there were five double agents.

In the final part of this three-part mini-series, we see what happened when the net started closing in, and why some people think that the Cambridge Five got away unpunished.

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Keywords: Learn English, vocabulary, lessons, idioms, aprende inglés, idiomas, aprender inglês, apprendre l'anglais, imparare l’inglese, ingilizce öğren,英語を習う, تعلم الإنجليزية