Good books don’t give up all their secrets at once. Neither does the island of Nantucket.When Agatha Mary Clarissa Christie Prouty, a.k.a. Angie, abandons her fiancé and her analyst job at a big Manhattan investment firm, she doesn’t expect to end up back where she started—the island of Nantucket.It’s not every day you get a chance to open a bookstore, complete with bookmark-eating cats and cantankerous great-aunts. Especially when your childhood friends agree to provi...