Neverwhere began life as a six-part BBC Two series in 1996. Sadly, a limited budget restrained its potential and it was in prose that the story truly came alive. Neil Gaiman, then known primarily for his comic work, is now a world-renowned author whose work straddles the worlds of prose, film and television. Neverwhere has never gone away though, with a comic version, stage adaptations and attempts at a movie in the intervening years.