In the 1960's, an Austrian man came to live in Ireland - tried to become a Butcher and later became a Travelling Salesman. The catch? He was a Soviet Spy the entire time!

To discuss, Seán is joined by Shaun Walker, International Correspondent for The Guardian and author of ‘The Illegals: Russia's Most Audacious Spies and Their Century-Long Mission to Infiltrate the West’.

Image: Penguin Random House