After twenty years of marriage, Nina has offloaded serial philanderer Joe and is happy enough coping alone with their two demanding daughters and her own hectic life. It feels like freedom, not having to wonder constantly where Joe is, who with and what he is up to.

But into Nina's new, carefree life some disturbing elements begin to appear. A flasher has been accosting young girls on the nearby common, leaving every man in the area under suspecion. Home no longer feels so safe. And Joe, during one of their so-civilised monthly catch-up lunches with Nina reveals that the new love in his life, pin-thin, power-dressed Catherine, has decided she now requires a baby. Babies, Joe tells Nine, were what he did with her: a remark that Nina finds oddly unsettling.

This is another with several close-to-home references. Nina's daughter Lucy is a child-model, complete with agent and photo-book. I used the experiences of having an acting-inclined daughter of my own here, having just about survived many an afternoon at auditions among hilariously pushy stage mummies and their highly talented darlings (my own, of course, was naturally a true star. If we'd only got the hang of perfect ringlets...)

I made Nina's brother Graham a plane-spotter: easy this - my husband is one. If you ever need to know where all the F15s are this week and what's new in military helicopters, he's your man. It could be worse, I suppose: at least it's not trains.