“All is not well in the Ankh-Morpork Opera House. A ghost stalks the dark corridors, leaving strange letters for management, and … killing people. Granny Weatherwax and Nanny Ogg, two Lancre witches investigate and are soon involved in all kinds of skulduggery, mayhem and ear-splittingly loud singing.

Terry Pratchett, the author of the highly successful Discworld Books, is Britain’s best-selling living author. 

Since the first book, The Colour of Magic was published in 1985, Terry Pratchett has been continuously in both the hardback and paperback best sellers lists – often both at once – and thanks to his Truckers, Diggers and Wheels books has also been in the children’s top 10.”