When a dead body is found in the Thames, caught in the chains of HMS Belfast, it sets off a search for a missing woman and confirms a sense that in London a person can become invisible once outside their community. Assuming they even have a community. The Orange Prize-winning novelist 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 and how coincidence or the randomness of birthplace can decide how we live and with whom.