Post-Gutenberg Pre-Apocalypse

1928 an aspiring magician agrees to work for a devil for a week in exchange for real magic. What is one week of work for him, however, is 17 years in the real world. He has to readapt to a post-depression and post-WWII world, patch up relations with those who thought he died, and put on a successful magic show. All while he is turning into a devil himself.