USA, the Great Depression. Lester Dent and Walter Gibson are the most-prolific, widely published storytellers on earth, authors of Doc Savage and The Shadow magazines-ground-breaking pulp heroes inspiring Superman and Batman, and launching the comic book age. Tasked with writing two Shadow novels each month, Gibson uses a battery of typewriters, resting bloodied fingertips between books as he pounds out 1,680,000 words a year...