James Castle goes to see his mistress, Christine, who provisionally agrees to let him stay.
Philip and Linda persuade James and Margaret to meet up.
Sarah and Alex have a meeting with Laura from the adoption agency and not everyone is happy when Rachel arranges a family get-together to discuss what to do about Margaret and James.
The family gathers to discuss what to do about Margaret and James.
Paul helps Linda set up a meeting with Christine, while Margaret considers hiring a solicitor to deal with James.
The trials and tribulations of the Castle family. James gets angry when he discovers Linda and Christine having a heart-to-heart chat. Stephen, Anita and Rachel wrangle with Tony over the cost of the wedding.
Sarah is interviewed on her own by Laura from the adoption agency while Alex is out working. Meanwhile, Alex receives a visit from Jill and their relationship becomes more intimate.
Philip and Linda's son David unexpectedly comes home from university and drops a bombshell on his parents about his future plans.
James visits Margaret after receiving her solicitor's letter. Sarah worries that she is neglecting Alex, while he confides in Jill about his reservations over the adoption.
James is annoyed when Tony asks whether he intends to bring Christine to the wedding, though Christine turns out to have her own views on the matter.
Tony is surprised when Adam turns up at his warehouse and suggests a way out of his business difficulties.
Jill suggests a way that Alex can get out of the adoption without Sarah knowing.
Tension grows between Christine and James over Joanne's disappearance. Matthew warns Margaret that the threat of divorce still stands.
Alex is caught making a suspicious phone call to Jill. Tony receives gloomy news.
Joanne returns home to Christine but her explanations for her disappearance cause Christine more concern than ever.
Christine gets the truth from Joanne at last and Philip tries to talk David out of becoming a priest.
Paul's plan to see Helen without her parents' consent has consequences for Philip and Linda.
Sarah is aghast when Jane provides her with evidence of Alex's affair.
Sarah comes face to face with her husband's mistress; Linda and Philip's displeasure with Paul shows no sign of subsiding; and Adam offers Tony some more business advice.
Tony and Rachel's evening in with Anita and Stephen is interrupted by a policeman with devastating news.
Alex tells Jill that Sarah knows of their affair; Stephen reacts badly to Anita's revelations; and Sarah comes up with an unusual proposal to prevent the collapse of the plans for the adoption.
Alison is nervous about the first night of her play.
Wedding day joy is shattered in the last of the series when the police arrive, looking for the groom.