Considered the first comic book with original material ever produced, 1933's "Detective Dan, Secret Op. 48" was a landmark. It only lasted one issue before morphing into the Dan Dunn newspaper strip. A blatant copy of Chester Gould's Dick Tracy (Norman Marsh had been an art assistant to Gould), Dan Dunn was a rough and tumble Secret Service agent who exacted violent retribution on any criminal who dared cross his path. This book reprints the entire first year of daily comics.