On the surface, Maud and Tim seem ill-matched. Maud is a scientist, an only child from a modest background; Tim is a musician from a large, rich family. She is emotionally cool, he wears his heart on his sleeve. Yet they make a home together, have a child and restore an old yacht. One day they will sail it, all three. Then a dreadful tragedy occurs. The strange thing is, Maud appears unscathed by it. Tim's family are horrified - what is wrong with her? She tells no one when she begins to feel a ghostly presence, or of her plan to sail single-handed across the Atlantic. Maybe she can escape what is pursuing her ... Ranging from the West Country to an isolated orphanage in Brazil, this is the mesmerising story of an enigmatic woman and her emotional journey - as deeply affecting as her physical journey becomes nail-bitingly dramatic.