Dr. Quartz II at Bay: The most memorable enemy of Nick Carter, the extraordinary detective, is Dr. Jack Quartz, who first appears in 1891 and 1893 in four stories in the Nick Carter Library. Like Sherlock Holmes and Professor Moriarty, Nick does not underestimate Quartz's ability. Quartz was so popular that the author brought him back in nineteen stories. This is the second Nick Carter case that involves Dr. Quartz.
Most Dime Novels were written by established authors under a pen name. Nicholas Carter was a pseudonym used by Frederick Russell Burton.