Secret listeners

Published: Oct. 10, 2019, 2 p.m.

b'Author and historian Helen Fry talks about her new book,\\xa0The Walls Have Ears, which describes an ingenious British intelligence operation to bug German prisoners during the Second World War. Historyextra.com/podcast Hosted on Acast. See acast.com/privacy for more information.\\nLearn more about your ad choices. Visit podcastchoices.com/adchoices'