Emma loves her husband Leo and their young daughter Ruby: she'd do anything for them. But almost everything she's told them about herself is a lie. And she might just have got away with it, if it weren't for her husband's job. Leo is an obituary writer and Emma is a well-known marine biologist, so, when she suffers a serious illness, Leo copes by doing what he knows best - reading and writing about her life. But as he starts to unravel her past, he discovers the woman he loves doesn't really exist. Even her name is fictitious.