Hunting down the Portland Spy Ring

Writer and espionage historian Trevor Barnes discusses his book Dead Doubles, which details the thrilling 1960s MI5 investigation into the infamous Portland Spy Ring, one of the most dangerous KGB espionage networks ever to operate in the UK. Hosted on Acast. See acast.com/privacy for more information. Learn more about your ad choices. Visit podcastchoices.com/adchoices