The Mammoth Book of Great Fantasy offers a wonderful collection - both classic and new - of this ever-popular genre. Mike Ashley brings together the great masters and originators of the form, such as George Macdonald and Lord Dunsany, through the great days of Conan the Barbarian, Elric and Melnibone and, of course, the creations of J.R.R.Tolkien, to today's craftsmen of fantasy such as Terry Pratchett, David Gemmell and Tanith Lee. Stories include: Yesterday was Monday, in which Theodore Sturgeon writes about a man who goes to sleep on Monday and awakes to find the next day is Wednesday - he has slipped out of time. The Wall Around the World, by Theodore Cogswell, tells of a young boy who masters flight in order to escape from a world in which he has become trapped. A Witch Shall be Born, one of Robert E.Howards greatest Conan the Barbarian stories. Aelfwine of England, a rare tale by J R R Tolkien, linking Dark Age Britain to Middle Earth.