The 1987 murder of Lita McClinton Sullivan sent shockwaves through the affluent Atlanta suburb of Buckhead, Georgia, like few other crimes before it. The neighborhood, with its stately mansions and top-tier schools, was simply not the kind of place where women were gunned down in cold blood in broad daylight. How many socialites had enemies so dangerous they would be murdered by a hitman pretending to deliver roses on an early winter morning?...