James Branch Cabell 
Jurgen 
A Comedy of Justice

The darkly comic allegory Jurgen caused quite a stir when it was originally published, with several jurisdictions deeming it obscene and calling for it to be pulled from store shelves. After his wife mysteriously vanishes, middle-aged pawnbroker Jurgen sets off on a not-so-heroic quest to find her, traveling through a series of strange lands in the process.