The 39 Clues #5: The Black Circle
| Country | USA |
| Author | Jude Watson |
| Binding | Kindle Edition |
| EISBN | 9780545292757 |
| Format | Kindle eBook |
| Label | Scholastic Inc. |
| Manufacturer | Scholastic Inc. |
| NumberOfPages | 194 |
| PublicationDate | 2011-07-01 |
| Publisher | Scholastic Inc. |
| ReleaseDate | 2011-07-01 |
| Studio | Scholastic Inc. |