Peter Hanan
Cover Art by 2
 | The Case of the Mystery Graves | Paperback |
 | The Secret of the Circus | Paperback |
Illustrator 2
 | The Phantom Horseman | Paperback |
| The Case of the Mystery Graves | Paperback |
Added by almoadhadi
| The Case of the Mystery Graves | Paperback |
| The Secret of the Circus | Paperback |
| The Phantom Horseman | Paperback |
| The Case of the Mystery Graves | Paperback |