But King has an advanced understanding of narrative structure and it's soon clear that his protagonist needs first to undertake a trial mission to establish the rules of intrusion. The only sustained criticism of King, apart from the howls of some incurable literary snobs, has been his books' alternative use as weight-lifter's training aids and there are moments, early in this 700-page work, when we may wonder if the mission couldn't have begun in, say, 1962. Less heart-warmingly, a cancerous miasma of cigarette smoke clouds every 1958 scene and racism is standard. Back in these days, baseball is played 'as it was meant to be played' and Jake/George finds the prices astonishingly low except, interestingly, oranges and long-distance phone calls, both exotic luxuries at the time.

'America was calling me.' And, though the 'temporal bedouin' from 2011 sometimes struggles with the lingo (what he calls a 'motel' is a 'Motor Court' there), the flashback America is largely a better one. 'I wanted to see the USA in my Chevrolet,' he sentimentally declares on the brink of one trip. Jake, who adopts the cover identity of real estate salesman George Amberson when he goes back, luxuriates in the unadulterated root beers and chocolate pies of an era before fast food. Time machines that travel backwards invite a writer towards period detail and nostalgia, and it is striking that King's device defaults to a year in which he would have been an 11-year-old schoolboy in Maine.

With the moral arm-lock of a dying man, Al passes on the task to Jake. Cancer has interrupted Al during a five-year mission to prevent the event that he believes to have misdirected American history: JFK's death. The restaurateur, now mortally ill, has found a portal in his pantry that leads to a particular day in 1958, where the time-traveller can begin a stay lasting months or even potentially years, always returning two minutes later. In 11.22.63, Jake Epping, a schoolteacher in Maine (a childhood reference point as recurrent in King's fiction as New Jersey in Philip Roth's), is summoned by the owner of Al's Diner, a local eaterie that has become popular but also suspect as a result of being able to sell, in 2011, burgers at near-1950s prices. The possibility of such an intervention must number, along with its darker twin of going back and killing Hitler, among the principal fantasies of time travel, and is explored in the 54th work of fiction by Stephen King. P eople are commonly said to remember their location when told of President John F Kennedy's assassination, but many must also wish the place they had been on 22 November 1963 was Dallas, where they might somehow have diverted the motorcade or prevented Lee Harvey Oswald from entering the Texas School Book Depository.

11 22 63 book review