It starts juicily enough. Indian-born Professor Malik Solanka, historian of ideas and frustrated genius with a tendency to erupt in Etnas of anger, leaves unappreciative Eleanor and makes for the States - how's that for authorial disguise? Though naturally he idolises the sex, literally, inventing a doll called Little Brain, a fantasised New Woman. Hip, sassy and spiky-haired, she is also smart beyond belief, "goading the great minds of the ages into surprising revelations". "Man," says the timehopping Little Brain to Galileo, "if some Pope had tried to get me to lie, I'd have started a f***ing revolution." A lot of this stuff - and there are pages of it - goes a very little way, and, as in The Ground Beneath Her Feet, the play of Rushdie's intrepid imagination often tends to resolve itself into something rather fashionable and tiresomely correct, in this case a hard-drinking, super-bright Lara Croft.