Normally, nobody in the Harper family would willingly set foot in Nick's flat, but when Susan's mother comes to stay, it suddenly seems more attractive.

Christmas in the Harper household means something special to everyone. For Susan it's the ultimate control opportunity; for Ben, the ultimate nightmare. Nick is having a typically unusual Christmas, Michael's girlfriend is getting much too serious, and Janey comes home with something unexpected which nobody actually wants.

The Harpers' family Christmas looks like being even more fearsome than usual for Ben, as Susan is giving grandson Kenzo a third birthday party to remember - but one which Ben will prefer to forget.

Janey starts an affair with a dentist whose charm rapidly captivates the rest of the females in the Harper household, while Michael's latest scam eventually puts everyone at risk.

While Ben is away, Susan goes to dinner with a wealthy art collector after her boss tells her to do whatever she has to do to sell art. Meanwhile, Grace is gathering her own collection, and Roger gets ready to pop the question.

Michael succeeds in placing the whole family on "The Weakest Link", but Anne Robinson is about to raise more difficult questions than expected.