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British author Mark Haddon discusses his astonishingly successful novel The Curious Incident of the Dog in the Night-time.

Published in 45 languages around the world, it is a murder mystery like no other. Fifteen-year old Christopher knows a very great deal about maths and very little about human beings, and when he finds a neighbour's dog murdered with a garden fork, he sets out on a terrifying journey which will turn his whole world upside down.

Mark Haddon answers readers’ questions from places as diverse as Iceland, Egypt and the Philippines, as well as in the studio in London.

(Photo: Mark Haddon. Credit: Nicky Barranger)