Robin is shocked but thrilled when Hannah arrives on his Oxford doorstep with a two year old and a suitcase, and announces that Freddie is his son. Her husband Marcus was less happy to learn about Hannah s fling with Robin, but several months on he s longing to spend some time with the little boy he thought was his. So he takes on a house-sit a few streets away. Jo, over the road, is intrigued by the newcomer, and quickly finds an excuse to learn more, but Hannah is also wondering if Marcus is the one, after all...