When a dead body is found in the Thames, caught in the chains of HMS Belfast, it begins a search for a missing woman. A policeman, a documentary film-maker and an Irish nurse named Chrissie all respond to the death of the unknown woman in their own ways. London is a place of random meetings, shifting relationships and some, like Chrissie intersect with many. Linda Grant weaves a tale around ideas of home; how London can be a place of exile or expulsion, how home can be a physical place or an idea, how all our lives intersect.