When musician Anna Greene dies at the untimely age of 42, her family and friends are stunned by their sudden loss. Theo, Anna's husband, is numb with grief and furiously angry with the world. Teenager Beth - in the middle of her GCSEs - is fighting her own demons, while her little brother Sam is just missing his Mum. And not unnaturally, Ruth, the children's grandmother, feels as a doctor that she should have been able to save her daughter's life. But Anna has left one last request: that those who loved her should walk the Pilgrims' Way to Canterbury in her memory. Four months later, they set out on a hundred mile journey that will change their lives for ever. Walking with the family are Father Stephen, the parish priest, who is wrestling with a deeply personal crisis of conscience, and Anna's sparky best friend, single mother Tamsin. Then a stranger joins the group. Who is he? And what was the catastrophe that drove Anna from home a decade earlier? Over the course of nine days, the pilgrims share their memories of Anna, and gradually the layers of her life are peeled back to uncover secrets that no one ever suspected. Can those who loved her come to terms with all that is past?