Jimmy's plans for a leisurely weekend are ruined when Diana makes a surprising and unwelcome discovery about the past. Cue Jimmy having to run around trying to find out who was having an affair with Diana's husband before he died. Whilst the attention of the adults is elsewhere Molly and Alex's tit for tat war starts to get out-of-hand.

• Fred Barron

• Amanda Abbington
• Nicholas Lyndhurst
• Celia Imrie