Father of two Joe Clarke is seventy-eight per cent sure he's just had an affair. After all, that is the hopelessly attractive office intern in bed next to him, isn't it? But then again, if he did have an affair, why can't he remember anything at all about the night in question? Mortified by his mistake, Joe vows to be a better man. But when his adored wife Penny puts two and two together and leaves him, things start to take a turn for the decidedly strange. Joe is told for a fact that he DIDN'T have an affair after all. He just thinks he did. Which is great news ... or at least it would be if the person who'd just delivered it wasn't the crisp-eating, overly-perfumed and mean-spirited ghost of his least favourite ex-girlfriend ...