Valuable lessons are learned by each as they both have to adjust to very different lives.
A month of each pretending to be the other ensues and they have to learn what it's really like to be in the other person's shoes.
Tash has to try to keep Brett's high-profile career on track.
Brett is so bored by Tash's job, he ends up trying to make science sexy.
Each learns to appreciate the other as only together can they make this enforced predicament work out.
Unfortunately this one slipped through the cracks when we were out extolling Love Actually and Bridget Jones.