Kate Bauers is slowly rebuilding her life. She has a new husband whom she loves and who adores her and her two children, and she feels fortunate to have found, Janine, the perfect Swiss au pair, to watch the children while Kate runs her gift shop.

Life is wonderful. Or it would be, if Kate weren’t suddenly so tired, so listless that even pills can’t help her get out of bed. And she can’t concentrate on the little things—like a missing photograph, or a nightgown that smells of a perfume she never uses. She’s getting weaker every day and feels like a stranger in her own house.

None of this is anyone’s fault—certainly not Janine’s. Everyone loves Janine. Nobody could possibly be suspicious of the loving, caring, jewel of a nanny.