Countdown star Susie Dent shared a big life update with fans, which she admitted was “terrifying”. The quiz show legend, 59, has been a stalwart on the long-running programme, having joined Countdown back in 1992. Dent took to social media this week to share some big career news away from the show. According to The Sun, the lexicographer and etymologist shared a post by publisher Zaffre Books which read: “Introducing the debut novel from Countdown’s @SusieDent… #GuiltyByDefinition. “Can you solve the mystery of the year? Pre-order a signed copy of this unmissable story from @Waterstones now”, …