- A red binding with a man inside a spiderweb embossed on the front cover, ran from the 1920's to 1931.
- There was a hiatus from 1932-1941.
- A black binding with various weapons embossed on the cover, ran from 1942-1947.
The first series was not marked as such. Beginning with the 2nd series, a "series number" appears on the title page. Most years had five or six titles in each "series". They were likely sold as sets, explaining why they tend to appear on the used market in sets of five or six titles.
The following list is likely incomplete. If you are aware of additional titles, please let me know.
Red binding, man in spiderweb embossed on front cover (36 titles)
 |
Author | Title | Series | Date | Comment |
| Allingham, Margery | Mystery Mile | 4 | 1930 | Berkeley, Anthony | The Silk Stocking Murders | 1 * | 1929 | Bonnamy, Francis | Death by Appointment | 4 | 1931 |
| Brock, Lynn | Murder on the Bridge | 3 | 1930 | ||
| Buck, Neville | Marked Men | 1 * | 1929 | ||
| Campbell, Alice | Juggernaut | 1 * | 1929 | ||
| Carr, John Dickson | It Walks by Night | 3 | 1930 | ||
| Carr, John Dickson | The Lost Gallows | 3 | 1931 | ||
| Christie, Agatha | The Seven Dials Mystery | 2 | 1929 | ||
| Clevely, Hugh | Call the Yard! | 4 | 1931 | ||
| Dalton, Moray | The Body in the Road | 3 | 1930 | pseu. of Katherine M. Renoir | |
| Dutton, Charles | Streaked with Crimson | 2 | 1929 | ||
| Ferguson, John | The Man in the Dark | 2 | 1928 | ||
| Fletcher, J. S. | The Diamond Murders | 2 | 1929 | ||
| Footner, Hulbert | The Mystery of the Folded Paper | 3 | 1930 | ||
| Footner, Hulbert | The Under Dogs | 1 * | 1929 | ||
| Freeman, R. Austin | The Eye of Osiris | 2 | no date | 1911 shown as copyright date, printing date likely 1929 | |
| Gluck, Sinclair | The Shadow in the House | 2 | 1929 | ||
| Hart, Frances Noyes | The Bellamy Trial | 1 * | 1929 | ||
| Holden, Raymond | The Penthouse Murders | 4 | 1931 | ||
| Hughes, Rupert | The Ladies' Man | 3 | 1930 | ||
| King, Rufus | Murder in the Willett Family | 4 | 1931 | ||
| Loban, Ethyl | The Calloused Eye | 4 | 1931 | ||
| MacDonald, Philip | The Crime Conductor | 4 | 1931 | ||
| Martin, Stuart | The Trial of Scotland Yard | 3 | 1930 | ||
| Morris, W. F. | "G.B." | 2 | 1929 | ||
| Packard, Frank | The Adventures of Jimmy Dale | 2 | 1929 | ||
| Packard, Frank | The Big Shot | 2 | 1929 | ||
| Plum, Mary | The Killing of Judge MacFarlane | 3 | 1930 | ||
| Propper, Milton | The Boudoir Murder | 3 | 1931 | ||
| Propper, Milton | The Ticker-Tape Murders | 3 | 1930 | ||
| Reilly, Helen | Murder in the Mews | 4 | 1931 | ||
| Rhode, John | The Murder at Bratton Grange | 2 | 1929 | ||
| Rinehart, Mary Roberts | The Man in Lower Ten | 1 * | 1929 | ||
| Wallace, Edgar | The Girl from Scotland Yard | 2 | 1929 | ||
| Wells, Carolyn | Deep Lake Mystery | 1 * | 1928 |
* The first series was not marked as such.
Black binding, weapons embossed on front cover (19 titles)
|
Author | Title | Series | Date | Comment |
| Blau, Ernest | Queen's Falcon | 9 | 1947 | likely the final title | |
| Eberhart, Mignon | Wings of Fear | 7 | 1946 | ||
| Ford, Leslie | Murder in the OPM | 6 | 1942 | ||
| Ford, Leslie | Siren in the Night | 6 | 1943 | ||
| Gardner, Erle Stanley | Case of the Drowning Duck | 5 | 1942 | ||
| Hughes, Dorothy | The Delicate Ape | 7 | 1944 | ||
| Hughes, Dorothy | Ride the Pink Horse | 8 | 1946 | ||
| Irish, William | Phantom Lady | 5 | 1942 | ||
| Lockridge, Frances & Richard | Death on the Aisle | 5 | 1942 | ||
| Lockridge, Frances & Richard | Killing the Goose | 7 | 1944 | ||
| Lockridge, Frances & Richard | Murder Within Murder | 8 | 1946 | ||
| McCloy, Helen | The Goblin Market | 7 | 1943 | ||
| Reilly, Helen | Murder on Angler's Island | 7 | 1945 | ||
| Saunders, Clare | Design for Treachery | 8 | 1947 | ||
| Starrett, Vincent | Murder in Peking | 8 | 1946 | ||
| Stout, Rex | Black Orchids | 5 | 1942 | ||
| Treat, Lawrence | H as in Hunted | 8 | 1946 | ||
| Walling, R.A.J. | The Corpse with the Eerie Eye | 5 | 1942 | ||
| Walling, R.A.J. | A Corpse by Any Other Name | 6 | 1943 |