Kris Marshall (Nick) and Siobhan Hayes (Abi) make a guest appearance in the last episode of the series, "Kenzo's Project".
Thinking Susan has forgotten her bag, Ben goes through it and is shocked to find a hotel room key and a note from James.
Ben is surprised when Margot reveals how good Susan was at picking men up in her youth and is horrified to find out their sons, Nick and Michael, were named after two of her many ex-boyfriends.
Meanwhile, Janey attempts to lift Roger's spirits by assuring him women find him attractive – especially her fictitious Swedish friend, Elke.
When Michael announces he's off to see a therapist, Susan is immediately worried there's something terribly wrong, as the comedy continues.
Ben is convinced a father-son chat will sort out the problem but Susan's not so sure and heads straight to see the therapist, Dr Twelvetree.
Meanwhile, Susan receives ten thousand pounds through the will after the moral support she gave him during and after the death of his wife Mildred.
Nevertheless, even when he gives in, her over-the-top nature leads to the assessor deeming the family unsuitable for a dog adoption.
To try to sort everything out, Ben goes into the kennel and without him knowing, Susan handcuffs him to one of the bars and leaves him there to deal with the television reporter.
The thought of spending a weekend with Roger and a giant bear causes depression to sink in especially when he attends the course but falls asleep and misses everything but the worst is still to come – there is a written exam to be completed and if he fails, he loses his job.
In an attempt to help Kenzo with his school project regarding his family's history, Ben and Susan decide to share the highlights of their past with him.
His interest in Uncle Nick leads to Janey and Michael sharing their personal experiences with him but what exactly can Alfie add to the discussion?