FORSYTH COUNTY -- Dennis Lehane is a storyteller. He, of course, tells stories in his two handfuls of best-selling novels, but he speaks in stories, narrating his thoughts with verbal visions of growing up in Boston and how being surrounded by his Irish immigrant family molded his writing style. Lehane, the author, screenwriter and TV producer who penned “Mystic River,” “Shutter Island” and “Gone Baby Gone,” among many famous others, spoke to an audience of almost 300 Tuesday night at the Lanier Technical College Forsyth Conference Center as the culmination of Forsyth Reads Together.