In November 2014, thirteen members of the Biden family gathered for their traditional Thanksgiving celebration. But this year felt different from previous. Joe and Jill Biden's eldest son, Beau, had been diagnosed with a malignant brain tumour fifteen 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 travelled more than a hundred thousand miles that year, across the world, dealing with crises in Ukraine, Central America and Iraq. 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, while contemplating the insistent and urgent question of whether he should seek the presidency in 2016. 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.

Promise Me, Dad is a story of how family and friendships sustain us and how hope, purpose and action can guide us through the pain of personal loss into the light of a new future.