Authors at the Edinburgh International Book festival – in pictures

Tom Kitchin launched his second book Kitchin Suppers, which he discussed with broadcaster and Celebrity Masterchef finalist Kirsty Wark Photograph: Murdo Macleod for the Guardian

Irvine Welsh’s Trainspotting trilogy was completed by a prequel called Skagboys Photograph: Murdo Macleod for the Guardian

Joyce Carol Oates discussed her new novel Mudwoman Photograph: Murdo Macleod for the Guardian

Ben Okri appeared at the festival to promote a new play of his 2009 short story The Comic Destiny, created by Lazzi theatre company, which premiered at the festival fringe Photograph: Murdo Macleod for the Guardian

China Mieville impressed the audience and critics with his new book Railsea Photograph: Murdo Macleod for the Guardian

Kate Summerscale followed up the success of The Suspicions of Mr Whicher with Mrs Robinson’s Disgrace Photograph: Murdo Macleod for the Guardian

Ian McEwan was joined by Alex Salmond to discuss his new book Sweet Tooth Photograph: Murdo Macleod for the Guardian

Jeanette Winterson before speaking about her moving memoir, Why Be Happy When You Could Be Normal? Photograph: Murdo Macleod for the Guardian

Carlos Gamerro seen before speaking about his new novel The Islands, which tells the surreal story of the Falklands war from one particular Argentinian perspective Photograph: Murdo Macleod for the Guardian

Steve Cole, a children's writer also known as Och-Aye-the-Man, dressed as a kilted Spider-Man to present his two new books Astrosaurs: Earth Attack! and Cows in Action: The Viking Emoo-gency. Photograph: Murdo Macleod for the Guardian