It takes a brave writer, even in an age transfixed by the workings of our inner woo, to bare their soul on the page. Tom Parfitt, a former Moscow correspondent, was scarred by the horrifying Beslan school siege and massacre which he saw unfold in North Ossetia in 2004. For years he was haunted by a recurring dream of ‘endless purgatory’ in which a grief-stricken woman, who has just learnt that her child has been killed in the terrorist attack, falls through the air, groaning like a wounded animal.