The Winner by David Baldacci
LuAnn Tyler is a single mother striving to escape a life of endless poverty. So when she gets a mysterious offer to be the guaranteed winner of the hundred million dollar lottery, it's like her prayers have been answered. But LuAnn refuses - and less than twenty-four hours later she's fighting for her life and on the run from a false murder charge. The offer - and its condition that she leave the country forever - seems her only hope. Ten years later, LuAnn secretly returns to the US to begin a new life with Matthew Riggs, a man whose origins are as murky as her own. But there are those who have picked up her trail - and it seems Matthew is the only one who can help her. But is he, too, closing in for the kill?