Anyone who has read Joanne Harris, author of Chocolat, an international bestseller, will be familiar with the deliciously warm character of Vianne Rocher. In Harris’ latest novel, PEACHES FOR FATHER FRANCIS (Viking October 2012), it’s eight years later and Vianne receives a letter from beyond the grave from her friend Armande, summoning her back from her life on a houseboat in Paris to the quaint village of Lansquenet where she used to run her chocolate shop.