ALL DETECTIVE MAGAZINE was published monthly by Dell from November 1932 to January 1935 (pictured here).  Beginning with the July 1934 issue, ALL DETECTIVE MAGAZINE would publish five stories about the villain, Dr. Death, each of which was written by Edward P. Norris, including one in the January 1935 issue, entitled "Thirteen Pearls."  With the February 1935 issue, the title was changed to DOCTOR DEATH, which ran for three issues (February, March and April 1935).  Each issue of the retitled magazine featured a book-length novel featuring the sinister Doctor written by "Zorro".  Zorro was actually prolific pulp writer Harold Ward..  When DOCTOR DEATH folded, two novels were left in inventory; these were published in the late 1980's in NEMESIS, INCORPORATED ("Murder Music") and PULP VAULT ("The Red Mist of Death").  ALL DETECTIVE published several stories by authors who would later go on to greater fame in the hero pulps, such as Lester Dent (including a Curt Flagg novel, "The Sign of the Adder" as by John Wiley in the November 1933 issue), Paul Ernst and Norman Daniels.  In addition to "Sign of the Serpent", Hugh Cave had two other stories in ALL DETECTIVE, "The Black Brotherhood" (November 1932) and "Hands Down" (February 1934), giving Cave a story in both the first and last issues of this pulp.