In November 2014, 13 members of the Biden family gathered on Nantucket for Thanksgiving, a tradition they had been celebrating for the past 40 years; it was the one constant in what had become a hectic, scrutinized, and overscheduled life. The Thanksgiving holiday was a much-needed respite, a time to connect, a time to reflect on what the year had brought and what the future might hold. But this year felt different from all those that had come before. Joe and Jill Biden's eldest son, Beau, had been diagnosed with a malignant brain tumor 15 months earlier, and his survival was uncertain. "Promise me, Dad," Beau had told his father. "Give me your word that no matter what happens, you're going to be all right." Joe Biden gave him his word. 
Promise Me, Dad chronicles the year that followed, which would be the most momentous and challenging in Joe Biden's extraordinary life and career. Vice President Biden traveled more than a hundred thousand miles that year, across the world, dealing with crises in Ukraine, Central America, and Iraq. When a call came from New York, or Capitol Hill, or Kyiv, or Baghdad - "Joe, I need your help" - he responded. For 12 months, while Beau fought for and then lost his life, the vice president balanced the twin imperatives of living up to his responsibilities to his country and his responsibilities to his family. And never far away was the insistent and urgent question of whether he should seek the presidency in 2016. The year brought real triumph and accomplishment, and wrenching pain. But even in the worst times, Biden was able to lean on the strength of his long, deep bonds with his family, on his faith, and on his deepening friendship with the man in the Oval Office, Barack Obama.