A best-selling author is making a return visit to a popular Downham bookshop for a special event later this month. Heidi Swain will be in No8 The Old Bookshop on Saturday, May 25, for a meet-the-author event which is free to attend. Sarah Cox, the store manager, said: “Heidi first came to Downham during the first WordFest week we held in September, and she was a really popular visitor. “We want to keep the events going throughout the year, and Heidi has kindly agreed to a return to No8 to meet and greet local bookworms.” The event, which will run from 10am to 12.30pm, will have refreshments pr…