A heartbreaking and timely novel about courage, yearning, the cost of holding onto the past - and the price of letting it go. Polly and Frank are young and in love, a lifetime together before them. But one evening in 1980, as the Texas sun sets over their shoulders, the world is suddenly pulled apart by a deadly virus. Within months, Frank is dying. Polly can save him, but only if she agrees to a radical plan: to time travel to 1993 for a corporation who can fund his life-saving treatment. She can only go forward, she cannot go back. And she must leave everything she loves behind, including Frank. All they have is the promise of a future together: they will find each other again in twelve ye