KEI3873156: Kevin Mayer, Edinburgh International book festival 2015 (photo) / Bridgeman Images

KEI3873159: Lucy Ribchester, Edinburgh International book festival 2015 (photo) / Bridgeman Images

KEI3873168: Lucy Ribchester, Edinburgh International book festival 2015 (photo) / Bridgeman Images

KEI3873169: Nicola Sturgeon, Scotland's First minister, Val McDermid, Edinburgh International book festival 2015 (photo) / Bridgeman Images

KEI3873174: Nicola Sturgeon, Scotland's First minister, Val McDermid, Edinburgh International book festival 2015 (photo) / Bridgeman Images

KEI3873181: Nicola Sturgeon, Scotland's First minister, Val McDermid, Edinburgh International book festival 2015 (photo) / Bridgeman Images

KEI3873183: Simon Armitage, Edinburgh International book festival 2015 (photo) / Bridgeman Images

KEI3873184: Terry Waite, Edinburgh International book festival 2015 (photo) / Bridgeman Images

KEI3873185: Simon Armitage, Edinburgh International book festival 2015 (photo) / Bridgeman Images

KEI3873189: Simon Armitage, Edinburgh International book festival 2015 (photo) / Bridgeman Images

KEI3873194: Terry Waite, Edinburgh International book festival 2015 (photo) / Bridgeman Images

KEI3873200: Arne Dahl (photo) / Bridgeman Images

KEI3873202: Alan Cumming (photo) / Bridgeman Images

KEI3873217: Andrew Duff (photo) / Bridgeman Images

KEI3873228: Asne Selerstad (photo) / Bridgeman Images

KEI3873231: Eva Dolan, Edinburgh International book festival 2015 (photo) / Bridgeman Images

KEI3873233: Evie Wyld (photo) / Bridgeman Images

KEI3873240: Charlotte Higgins (photo) / Bridgeman Images

KEI3873243: Eva Dolan (photo) / Bridgeman Images

KEI3873263: Mark Urban (photo) / Bridgeman Images

KEI3873265: Lucy Ribchester (photo) / Bridgeman Images

KEI3873274: Oscar Coop-Phane (photo) / Bridgeman Images

KEI3873288: Richard Cole (photo) / Bridgeman Images

KEI3873292: Richard Havers (photo) / Bridgeman Images

KEI3873298: Robert Crawford (photo) / Bridgeman Images

KEI3873308: Sara Novic , Edinburgh International book festival 2015 (photo) / Bridgeman Images

KLT3873494: Unsuk Chin and Tito Ciccherini / Bridgeman Images

KLT3873507: Unsuk Chin / Bridgeman Images

KLT3873525: Unsuk Chin / Bridgeman Images

KLT3873530: Unsuk Chin / Bridgeman Images

KEI3873636: REMOVED (photo) / Bridgeman Images

KEI3873662: Karrie Fransman, Edinburgh International book festival 2015 (photo) / Bridgeman Images

KEI3873668: Lisa McInerney, Edinburgh International book festival 2015 (photo) / Bridgeman Images

KEI3873670: Lisa McInerney, Edinburgh International book festival 2015 (photo) / Bridgeman Images

KEI3873705: REMOVED (photo) / Bridgeman Images

KEI3873709: Sophie McKenzie, Edinbugh International book festival 2015 (photo) / Bridgeman Images