The Old Sleuth was the masthead of hundreds of detective and crime dime novels and magazines issued by various publishers from 1872 to 1920, in over fifteen different series. The Sleuth was believed to be a pseudonym of Harlan Page Halsey and very few of the quick-moving plots are available in an easy to read form today.

The old detective originated in the Fireside Companion; A Journal of Instructive and Entertaining Literature magazine in 1872. However, only a few of the hundreds of stories featured the investigator himself. The majority are about other detective characters and a small number were romances.

These restored novels are from the Old Sleuth's Own series, published twice-monthly from 1894 to 1899 by the Parlor Car Publishing Co. They were reprinted between 1900 and 1915 by J. S. Ogilvie, who reused Parlor Car's printing press plates, then bound the books in new covers.

By 1920 the readership of dime novels had declined and publication of The Old Sleuth stories ceased.

The Four Dime Novels From The Old Sleuth are...

1. Amzi, The Detective; or, Morning, Noon and Night In New York. A Detective Tale. (1896)

2. Seth Bond; or, A Lost Treasure Mystery. A Startling Detective Narrative. (1898)

3. A Struggle To Win; or, A Gypsy Boy's Secret. (1898)

4. A Detective's Daughter. An Extraordinary Narrative. (1898)