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With Elvis has Left the Building, the longstanding editor of GQ has inexplicably written a book that could serve as a handy, if perhaps overly comprehensive, compendium of bad journalistic habits: from the over-arching flaw of failing to decide what you want to say to such specifics as the excessive use of the phrase ‘American dream’ and wildly random scene-setting. (In the lengthy section on 1977, the year of Presley’s death, we learn that ‘five days before Luciano Pavarotti made his first appearance on American television, the rings of Uranus were discovered’.

The Emperor Waltz is long enough at 600 pages to be divided, in the old-fashioned way, into nine ‘books’. Each book has a date, sliding from 1922 to 1979 to next year to 203 ad to last month. This might suggest an overly systematic novel in the mode of David Mitchell’s Cloud Atlas or Eleanor Catton’s Booker Prize-winning breezeblock The Luminaries. But Hensher has always been a writer with a wandering, curious eye (on its most exhilarating display in 2011’s King of the Badgers), and The Emperor Waltz is a novel that, despite its superficial restraints, won’t sit still.

Steven D. Levitt was a Harvard economist who specialised in politics and spent a lot of time watching cop shows on TV. Then he had an idea: why not switch from politics, which he found dull, to crime? Soon he was studying the crack cocaine economy. Stephen J. Dubner was the guitarist in a rock band called the Right Profile. But he didn’t like the rock’n’roll lifestyle; he was a bookish type. So he became a journalist, got a job at the New York Times, and found himself interviewing a go-ahead Harvard economist who had written interesting stuff on the crack cocaine economy, among many other fascinating things. This, of course, was Levitt. Dubner made a suggestion: why not write a book together, based on Levitt’s work?

Alan Judd’s spy novels occupy a class of their own in the murky world of espionage fiction, partly because they blend two elements of the genre that are rarely seen together. First, they are grounded in a wholly plausible version of the intelligence community, where decisions evolve in Whitehall committee rooms and the wiles of politicians and bureaucrats are just as important as the machinations of moles. Secondly, their central characters often recall an older tradition of gentlemen patriots that goes back to John Buchan’s Richard Hannay. The combination shouldn’t work but in Judd’s novels it does. These elements meet in the character of Charles Thoroughgood, who has already appeared in three earlier books, first as a soldier and later as an MI6 officer.