sentences:  Hannah (Lili Taylor) is fatally injured in a car accident; and her spirit migrates into the body of her unconscious daughter Samantha (Olivia Thirlby) when Hannah dies on a gurney next to her.Hannah resolves to keep her daughter's life running smoothly in preparation for her potential return.Hannah, living in Samantha's body, endeavors to keep up an emotional relationship with the husband/father, Ben (David Duchovny), which sometimes veers perilously close to becoming physical, to mutual horror.