The first series begins nine months after the pilot episode. After Pete and Jenny's baby is born in Episode 1, the couple have a hard time getting any sleep. Pete has to cope with the death of his father in Episode 3. Adam and Rachel decide to rent a house together. He is horrified to discover in Episode 2 that she is married to another man. While he is staying with Pete and Jenny, Rachel has sex with her visiting husband (Lennie James)—who leaves soon after—and is pregnant by Episode 6. Just as hers and Adam's relationship is recovering, she tells him that he might not be the father and is moving to London until the birth. Karen and David have recently hired Ramona as a nanny to their young son Josh. At her publishing job, Karen edits the novel of a renowned author (Denis Lawson), who she becomes attracted to. She plans to sleep with him on a book tour but is humiliated when she finds out he is not attracted to her. David tries to sleep with Ramona to get back at Karen, which causes friction between the couple. They seek guidance counselling to repair their marriage.