The facts are compelling: A couple sailing to the other side of the globe, adrift after their yacht sinks and a battle to survive for 117 days. But the telling of that story is taken to whole new level by Sophie Elmhirst who uses her journalistic skills to uncover the facts and then takes us inside the marriage of her eponymous heroes. Who were Maurice and Maralyn, where did their spirit of adventure come from, and how was their relationship the key to survival?