Sin City

In italics at the very end of the preface to Slouching Towards Bethlehem (1968), Joan Didion spills the beans: ‘Writers are always selling somebody out.’ It’s hard to improve on that, but we can at least specify that she had journalists in mind, not poets or novelists, though probably she looked on all scribblers with a cold eye. Six years later, Didion’s husband John Gregory Dunne published Vegas: A Memoir of a Dark Season, which isn’t really a memoir, more a queasily auto-biographical novel. Or, as he puts it, ‘a fiction which recalls a time both real and imagined’. A time and also a place – Las Vegas, Nevada, in