Annie Mason is ready for a holiday where someone else decides the menu, makes the food, and provides the entertainment for her two teenage girls. So it's easy to board the ferry and go to Nantucket, where her sister has invited her for a feast at The Lighthouse Inn. Julia Harper is excited to host her sister at the inn. And her half-sister, Janey Forsythe, who she's grown closer and closer to over the past few months. She's not...