To celebrate the upcoming release of 'The Sentinel', which heralds a new dawn for everyone's favourite literary avenger, as Lee Child and Andrew Child (Grant) take on co-authorship, we share a very special event from the archive.

In 2009 Lee Child and his brother Andrew took to the stage together at the Theakston Old Peculier Crime Writing Festival. Were there inklings of what was to come? What was their response when asked if they would ever work together? You'll just have to listen to find out.

Don't miss Lee Child in 'The Reacher Guy': A Life In Pictures, in conversation with his biographer Dr Heather Martin, streaming for free on HIF Player on the Harrogate International Festivals website on Sunday 25th October. harrogateinternationalfestivals.com

Podcast music by Joseph McDade.