Earlier this week George Blake, former MI6 officer and Soviet spy, died at the age of 98 in Moscow.
One of the most notorious double-agents of the cold-war era, responsible for exposing the identities of hundreds of western agents across eastern Europe in the 1950s, he solidified his legacy further through his daring escape from London's Wormwood Scrubs prison in 1966.
Donal Fallon joined Sean Defoe for another episode of Hidden Histories to discuss.
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