
author
A house name tied to the fast-moving world of 19th-century dime-novel mysteries, this byline appeared on sensational detective adventures meant to hook readers from the first page. The name is best known today for Shadow, the Mysterious Detective, a lively example of early popular crime fiction.

by Police Captain Howard
"Police Captain Howard" was a pseudonym rather than a clearly documented individual author name. Reliable sources link it to Luis Senarens, a hugely productive writer and editor in American popular fiction who published under several names during the late 1800s and early 1900s.
That pen name is associated with Shadow, the Mysterious Detective, one of the many brisk, adventure-driven stories that helped define the dime-novel era. These tales were written for excitement and pace, mixing mystery, danger, and cliffhanger storytelling for a broad audience.
Because the byline was a pseudonym, details about "Police Captain Howard" as a person are limited. What can be said with confidence is that the name belongs to the bustling world of early mass-market fiction, where memorable aliases and nonstop action were part of the appeal.