H.S. · S.K. · Stephen Keeler
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| The Case of the 16 Beans | 978-1-60543-312-7 (1-60543-312-8) | 2009 |
| The Riddle of the Traveling Skull | 978-1-932416-26-8 (1-932416-26-9) | 2005 |
| Thieves' Nights | 978-1-60543-397-4 (1-60543-397-7) | 2009 |