As a high school history teacher, Gemma Jones loves the certainty of the past--specific names, solid dates, proven statistics. Maybe that's because her own past resembles a jumbled-up sock drawer, one where it's impossible to find a match. On paper, Gemma's life is just like any other successful, single thirtysomething. Her students adore her. She lives in a cute beachside cottage next door to the world's sweetest neighbor, Margie. And she's definitely caught t...