Terry Pratchett 's Discworld novel, dramatised in six parts. With Martin Jarvis , John Wood , Melvyn Hayes ,
Stephen Thome and Helen Atkinson Wood.
4: "The Dewey system," reflected the librarian, picking a parasite from its fur, "has its fine points. But when you're setting out to look for a crucial stolen book within the multi-dimensional folds of L-space, what you really need is a ball of string." Dramatised by Michael Butt