Elizabeth Pringle lived all her long life on the Scottish island of Arran. But did anyone really know her? In her will she leaves her beloved house, Holmlea, to a stranger - a young mother she'd seen pushing a pram down the road over thirty years ago. It now falls to Martha, once the baby in that pram, to answer the question: why? Martha is coping with her mother's dementia and the possibility of a new life on Arran could be a new start.