Book excerpt: Fourteen terrifying ghost stories chosen by the master of the macabre, Roald Dahl. 'Spookiness is the real purpose of the ghost story. It should give you the creeps and disturb your thoughts . . .' Who better to choose the ultimate in spine-chillers than Roald Dahl, whose own sinister stories have teased and twisted the imagination of millions? Here are fourteen of his favourite ghost stories, including Sheridan Le Fanu's The Ghost of a Hand, Edith Wharton's Afterward, Cynthia Asquith's The Corner Shop and Mary Treadgold's The Telephone. Roald Dahl, the brilliant and worldwide acclaimed author of Charlie and the Chocolate Factory, James and the Giant Peach, Matilda, and many more classics for children, also wrote scores of short stories for adults. These delightfully disturbing tales have often been filmed and were most recently the inspiration for the West End play, Roald Dahl's Twisted Tales by Jeremy Dyson. Roald Dahl's stories continue to make readers shiver today.