Radio 3 broadcaster Petroc Trelawny and the crime writer Stuart MacBride, author of the bestselling Logan McRae and Ash Henderson crime thrillers, talk to Harriett Gilbert about books they love. Petroc's choice is dystopian JG Ballard novel The Drought, Stuart's is the Hollywood memoir by David Niven, The Moon's a Balloon, and Harriett's is Borges and Me by Jay Parini