Sue Perkins challenges Paul Merton, Shaparak Khorsandi, Daliso Chaponda and Heidi Regan to speak for 60 seconds without repetition, deviation or hesitation. The long-running Radio 4 national treasure of a parlour game is back for a new series with subjects this week ranging from Columbo to Vertigo. Production co-ordinator: Caroline Barlow Sound editor: Marc Willcox Producer: Rajiv Karia A BBC Studios Production