I have been researching WW2 escape lines for almost twenty years, ever since discovering the diaries of my late father who was captured in June 1940 and escaped to cross the Pyrenees to Spain in September 1941. I run the escapelines.com website, and wrote the 2017 book, They came from Burgundy about the Bourgogne escape line. My second book, Express Delivery, tells the story of the Shelburn line, and is due to be published in the summer of 2019.