Ghost-writer Tom Cartwright is always ready to assume the persona of anyone his agent asks him to be, as long as it brings in money. So, when he is offered the lucrative task of ghosting the autobiography of glamorous young soap star Georgina Nye, he and his girlfriend Sara are thrilled: Tom will finally be able to afford some new carpets for their house. But things soon go awry when Tom finds himself drawn to George by forces outside his control (even though they are inside his own body). Does his five-year relationship with Sara stand a chance in the face of this explosion of chemistry? Are he and George bound by emotional attraction? Or is it simply the result of vasopressin being released by his pituitary gland?