James Naughtie is joined by Denise Mina to talk about her book The Long Drop. This intriguing true-crime story is set in 1950s Glasgow when notorious serial killer Peter Manuel spread fear throughout the city. The Long Drop alternates between Manuel's trial and a extraordinary night he spent with Glaswegian businessman William Watt, whose own family Peter Manuel was suspected of killing. Despite this, the two men form an unlikely alliance and tour the bars and dives of Glasgow together. Recorded at The Portobello Bookshop in Edinburgh. Upcoming recordings at BBC Broadcasting House in London: 21 September at 1300 - Bernardine Evaristo on Mr Loverman 12 October at 1200 noon - Katherine Heiny on Standard Deviation. Email [email protected] to take part