New York Times bestselling author John Hart, who grew up in Salisbury, is not afraid to take risks, including those with high stakes. In fact, he seems to thrive on these risks. For instance, he gave up his job as a stockbroker about 15 years ago to complete his first literary thriller. That risk-taking paid off when his book, “The King of Lies,” became a Times bestseller in 2006. Three other successes followed: ”Down River” (2007), ”The Last Child” (2009), and ”Iron House” (2011).