Mackinac Island prepares for an approaching summer of gorgeous coastal walks, carriage rides, and blissful nights of celebration -- and for the first time in her life, Cindy Swartz is ready for change. Last autumn, Cindy's half-sister, Elise, arrived to the island with dramatic news that flipped the Swartz family upside down. Around the same time, Cindy's long-lost son, Michael, also returned after three years away. He'd never told her where he went;...